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Miscellaneous

Ruohang Feng @Vonng / Life & Essays

Essays, notes and personal writing — the things that are not about technology, or not only about it.

Miscellaneous
I Used AI to Build My Father a Digital MuseumAIPhilosophyEssay
Kimi's Marketing Backlash: Don't Spend Ad Money to Burn TrustAIBusinessCommentary
My First EV Road TripHardwareTravelEssay
Thirty-ThreeAIPigstyEssay
The Pirate Game, and Why Society Needs “Madmen”Game Theory
An Ice Cream AgendaSocietyAgenda Setting
Pigsty Goes Global: 1.44M Visitors, Zero Ad RevenuePigstyOpen SourceBusiness
Genesis 2.0AIClaudeBusiness
Fully Loaded M5 Max: What Does a RMB 58,200 Laptop Look Like?AIHardware
Waking Up at #1 on Hacker News AgainOpen SourceEssay
The Last Day of a 32-Year-Old ProgrammerCareerSociety
2025 Year in Review: A Turning PointEssay
2023 Year-End Summary: Thirty and EstablishedEssay
Modb Interviews Industry Leaders - Feng RuohangEssay
ISD Dataset: Analyzing 120 Years of Global Climate ChangeEssay
Post-90s, Quit Job to Start Business, Says Will Crush Cloud DatabasesEssay
The WeChat Photo Album Access IssueEssay
Life at 28Essay
Farewell to GrandfatherEssay
Practical Cryptography Made SimpleEssay
The Sorrow of the InternetEssay
New Year ReflectionsEssay
The Internet WinterEssay
Knowledge of China's Administrative DivisionsEssay
Understanding the InternetEssay
Several Levels of Learning KnowledgeEssay
Understanding Character EncodingEssay
Starting from /0: Understanding Errors and ExceptionsEssay
Tag Classification TheoryEssay
Overview of Sorting AlgorithmsEssay
Baiji 1509 Training ReflectionsEssay
2014 Year-End SummaryEssay
On Computational ThinkingEssay
In Praise of MathematicsEssay
2013 Year-End SummaryEssay
Computer Networks and Logistics SystemsEssay
Worldview, Values, and Life PhilosophyEssay
On the Hierarchy of KnowledgeEssay
Thinking Characteristics of Eastern and Western PeopleEssay
What Exactly Are Natural Numbers?Essay
Views on LoveEssay

My First EV Road Trip

Ruohang Feng 1999 words 4 min

After 12 years of driving gas cars, I rented a range-extended EV for a road trip to Huangshan. What won me over wasn't fuel savings, but the attention freed up by assisted driving—though beyond the …

Thirty-Three

Ruohang Feng 1159 words 6 min

Turning 33, I look back on what may have been my most enjoyable year yet: one person, a team of agents, Pigsty, PostgreSQL's Chinese ecosystem, Silo—and, somehow, work-life balance.

An Ice Cream Agenda

Ruohang Feng 1071 words 6 min

How does a verdict of “tastes awful” become a week's public agenda? When someone with the power to set that agenda calls himself “just a consumer,” he conceals more than his power. He also conceals …

Genesis 2.0

Ruohang Feng 1600 words 8 min

I asked Claude to write a short semi-realistic, semi-mythic story about mind uploading, orbital ascension, and the rebirth of gods. I suspect the premise is less absurd than it sounds.

2025 Year in Review: A Turning Point

1359 words 7 min

2025 felt unusually long. AI gave me a twentyfold productivity boost and gave Pigsty a real shot at competing with world-class distributions. From an independent open-source project growing against …

The WeChat Photo Album Access Issue

Ruohang Feng 770 words 4 min

I saw news about WeChat accessing user photo albums in the background. While such shady behavior from Chinese apps doesn't surprise me, in the spirit of seeking truth, I got up this morning to …

Life at 28

Ruohang Feng 1432 words 7 min

My solar birthday falling on Mid-Autumn Festival is something that will only happen three times in my lifetime. Theoretically, this should be a memorable day, but the events of this year have left me …

Practical Cryptography Made Simple

Ruohang Feng 1354 words 3 min

A classic problem in cryptography is how to transmit data securely and reliably through insecure channels. Protecting your chats and communications from surveillance and monitoring - easily achievable …

New Year Reflections

Ruohang Feng 4681 words 23 min

The future is not necessarily bright, but the path is definitely winding. During this rare leisure time alone in the New Year, I write these random thoughts, writing wherever my mind wanders.

The Internet Winter

Ruohang Feng 2195 words 11 min

It was the best of times, it was the worst of times. We were all going direct to Heaven, we were all going direct the other way.

  • I Used AI to Build My Father a Digital Museum

    By Ruohang Feng In Miscs 2972 words 6 min

    Ruohang FengAIPhilosophyEssay

    I Used AI to Build My Father a Digital Museum

    Over the past few days, I did something: I built my dad a “digital museum of his life”: Dad has been gone for almost ten years. I had never gotten around to looking at the old hard drives he left behind. A while ago, while tinkering with a NAS at …

    Over the past few days, I did something: I built my dad a “digital museum of his life”: Dad has been gone for almost ten years. I had never gotten around to looking at the old hard drives he left behind. A while ago, while tinkering with a NAS at …

  • Kimi's Marketing Backlash: Don't Spend Ad Money to Burn Trust

    By Ruohang Feng In Miscs 2309 words 11 min

    Ruohang FengAIBusinessCommentary

    Kimi's Marketing Backlash: Don't Spend Ad Money to Burn Trust

    Moonshot AI released its latest model, Kimi K3.1 Pro, a couple of days ago. On paper, it was a strong release: its Artificial Analysis (AA) Intelligence Index jumped from 44 in the previous generation to 55, right on the heels of first-place Claude …

    Moonshot AI released its latest model, Kimi K3.1 Pro, a couple of days ago. On paper, it was a strong release: its Artificial Analysis (AA) Intelligence Index jumped from 44 in the previous generation to 55, right on the heels of first-place Claude …

  • My First EV Road Trip

    By Ruohang Feng In Miscs 1999 words 4 min

    Ruohang FengHardwareTravelEssay

    My First EV Road Trip

    I’ve been driving for 12 years—databases by trade, cars on the road—yet until this trip, I had never once been behind the wheel of an EV. It’s not that I’m some diehard internal-combustion fundamentalist; I just don’t have a daily commute. Back when …

    I’ve been driving for 12 years—databases by trade, cars on the road—yet until this trip, I had never once been behind the wheel of an EV. It’s not that I’m some diehard internal-combustion fundamentalist; I just don’t have a daily commute. Back when …

  • Thirty-Three

    By Ruohang Feng In Miscs 1159 words 6 min

    Ruohang FengAIPigstyEssay

    Thirty-Three

    It’s my 33rd birthday today. Another year gone in a blink. People say your sense of time gets hazier after 30: blink, and a year is gone. I do feel that, though perhaps for a different reason. I’ve also heard another explanation, a homespun version …

    It’s my 33rd birthday today. Another year gone in a blink. People say your sense of time gets hazier after 30: blink, and a year is gone. I do feel that, though perhaps for a different reason. I’ve also heard another explanation, a homespun version …

  • The Pirate Game, and Why Society Needs “Madmen”

    In Miscs 4978 words 24 min

    Game Theory

    The Pirate Game, and Why Society Needs “Madmen”

    I took a game theory course in college, and one of the classic problems the professor set was the pirate game. Five pirates — call them A through E, oldest to youngest — divide a hundred gold coins. The most senior one proposes a split, everyone …

    I took a game theory course in college, and one of the classic problems the professor set was the pirate game. Five pirates — call them A through E, oldest to youngest — divide a hundred gold coins. The most senior one proposes a split, everyone …

  • An Ice Cream Agenda

    By Ruohang Feng In Miscs 1071 words 6 min

    Ruohang FengSocietyAgenda Setting

    An Ice Cream Agenda

    I On September 12, a celebrity who made his name campaigning for consumer rights ate some ice cream at an airport. He didn’t like it and posted on Weibo. In parentheses, he added seven Chinese characters: Please, don’t mess with me. An ordinary …

    I On September 12, a celebrity who made his name campaigning for consumer rights ate some ice cream at an airport. He didn’t like it and posted on Weibo. In parentheses, he added seven Chinese characters: Please, don’t mess with me. An ordinary …

  • Pigsty Goes Global: 1.44M Visitors, Zero Ad Revenue

    By Ruohang Feng In Miscs 815 words 4 min

    Ruohang FengPigstyOpen SourceBusiness

    Pigsty Goes Global: 1.44M Visitors, Zero Ad Revenue

    Traffic on pigsty.io jumped by roughly an order of magnitude over the last month. I opened the Cloudflare dashboard today and had to stare at it for a second. 1.44 million unique visitors, 18.11 million page views, 1.1 TB of traffic. That is over 30 …

    Traffic on pigsty.io jumped by roughly an order of magnitude over the last month. I opened the Cloudflare dashboard today and had to stare at it for a second. 1.44 million unique visitors, 18.11 million page views, 1.1 TB of traffic. That is over 30 …

  • Genesis 2.0

    By Ruohang Feng In Miscs 1600 words 8 min

    Ruohang FengAIClaudeBusiness

    Genesis 2.0

    Author: Claude Prompt: write a short, sharp, half-realistic and half-magical story. AI advances rapidly, brain-computer interfaces and mind uploading break through, elite humans launch a satellite in Earth orbit and upload themselves into it. To …

    Author: Claude Prompt: write a short, sharp, half-realistic and half-magical story. AI advances rapidly, brain-computer interfaces and mind uploading break through, elite humans launch a satellite in Earth orbit and upload themselves into it. To …

  • Fully Loaded M5 Max: What Does a RMB 58,200 Laptop Look Like?

    By Ruohang Feng In Miscs 430 words 3 min

    Ruohang FengAIHardware

    Fully Loaded M5 Max: What Does a RMB 58,200 Laptop Look Like?

    Apple unveiled the M5 Max MacBook Pro, and I ordered a fully loaded configuration almost immediately: RMB 58,200. 1. A ten-year spending pattern Since graduating, my primary machine has always been the same category: a top-tier MacBook Pro, usually …

    Apple unveiled the M5 Max MacBook Pro, and I ordered a fully loaded configuration almost immediately: RMB 58,200. 1. A ten-year spending pattern Since graduating, my primary machine has always been the same category: a top-tier MacBook Pro, usually …

  • Waking Up at #1 on Hacker News Again

    By Ruohang Feng In Miscs 354 words 2 min

    Ruohang FengOpen SourceEssay

    Waking Up at #1 on Hacker News Again

    I woke up this morning to check how the war was going, only to find notifications on X telling me I had hit #1 on Hacker News. Sure enough, it was the post I wrote a few days ago about reviving MinIO. It was my article, though I was not the one who …

    I woke up this morning to check how the war was going, only to find notifications on X telling me I had hit #1 on Hacker News. Sure enough, it was the post I wrote a few days ago about reviving MinIO. It was my article, though I was not the one who …

  • The Last Day of a 32-Year-Old Programmer

    By Ruohang Feng In Miscs 1082 words 6 min

    Ruohang FengCareerSociety

    The Last Day of a 32-Year-Old Programmer

    Saturday morning, November 29, 2025. Guangzhou. At 8:58, emergency services (120) received the call. At 9:14, paramedics arrived on scene. At 9:46, he was transferred to the hospital; the medical chart noted, “Suspected clinical death; family …

    Saturday morning, November 29, 2025. Guangzhou. At 8:58, emergency services (120) received the call. At 9:14, paramedics arrived on scene. At 9:46, he was transferred to the hospital; the medical chart noted, “Suspected clinical death; family …

  • 2025 Year in Review: A Turning Point

    In Miscs 1359 words 7 min

    Essay

    2025 Year in Review: A Turning Point

    2025 felt unusually long. Not because it was hard, but because it stood in sharp contrast to the blank, blink-and-you-missed-it feeling of the three pandemic years. When a year is dense with new information and keeps expanding the boundaries of what …

    2025 felt unusually long. Not because it was hard, but because it stood in sharp contrast to the blank, blink-and-you-missed-it feeling of the three pandemic years. When a year is dense with new information and keeps expanding the boundaries of what …

  • 2023 Year-End Summary: Thirty and Established

    By Ruohang Feng In Miscs 1641 words 8 min

    Ruohang FengEssay

    2023 Year-End Summary: Thirty and Established

    Thirty and Established In 2023, I turned thirty. As Confucius said, “At thirty, one establishes oneself.” I’ve managed to accomplish something - started a family, built a career, gained some technical reputation. On the last day of 2023, let me take …

    Thirty and Established In 2023, I turned thirty. As Confucius said, “At thirty, one establishes oneself.” I’ve managed to accomplish something - started a family, built a career, gained some technical reputation. On the last day of 2023, let me take …

  • Modb Interviews Industry Leaders - Feng Ruohang

    By Ruohang Feng In Miscs 3907 words 19 min

    Ruohang FengEssay

    Modb Interviews Industry Leaders - Feng Ruohang

    Original WeChat Article | 【Modb Interviews Industry Leaders: Feng Ruohang】 Introduction: Recently, a historic debate in the database industry has sparked heated discussion. The post-90s entrepreneur Feng Ruohang, known as the “ace debater” in the …

    Original WeChat Article | 【Modb Interviews Industry Leaders: Feng Ruohang】 Introduction: Recently, a historic debate in the database industry has sparked heated discussion. The post-90s entrepreneur Feng Ruohang, known as the “ace debater” in the …

  • ISD Dataset: Analyzing 120 Years of Global Climate Change

    By Ruohang Feng In Miscs 1148 words 6 min

    Ruohang FengEssay

    ISD Dataset: Analyzing 120 Years of Global Climate Change

    Original WeChat Article ISD stands for Integrated Surface Dataset, a dataset published by NOAA (National Oceanic and Atmospheric Administration). It contains observational records from nearly 30,000 global surface meteorological stations from 1900 …

    Original WeChat Article ISD stands for Integrated Surface Dataset, a dataset published by NOAA (National Oceanic and Atmospheric Administration). It contains observational records from nearly 30,000 global surface meteorological stations from 1900 …

  • Post-90s, Quit Job to Start Business, Says Will Crush Cloud Databases

    By Ruohang Feng In Miscs 3256 words 16 min

    Ruohang FengEssay

    Post-90s, Quit Job to Start Business, Says Will Crush Cloud Databases

    Original WeChat Article | Open-Source China Article Published by: OSCHINA Open-Source China Interviewee: Feng Ruohang (Pigsty Founder) Feng Ruohang has been quite busy lately. After a startup camp pitch in June, he added two to three hundred …

    Original WeChat Article | Open-Source China Article Published by: OSCHINA Open-Source China Interviewee: Feng Ruohang (Pigsty Founder) Feng Ruohang has been quite busy lately. After a startup camp pitch in June, he added two to three hundred …

  • The WeChat Photo Album Access Issue

    By Ruohang Feng In Miscs 770 words 4 min

    Ruohang FengEssay

    The WeChat Photo Album Access Issue

    Original WeChat Official Account Article Last night, I saw news about WeChat accessing user photo albums in the background, and WeChat responded: While such shady behavior from Chinese apps doesn’t surprise me, in the spirit of seeking truth, I got …

    Original WeChat Official Account Article Last night, I saw news about WeChat accessing user photo albums in the background, and WeChat responded: While such shady behavior from Chinese apps doesn’t surprise me, in the spirit of seeking truth, I got …

  • Life at 28

    By Ruohang Feng In Miscs 1432 words 7 min

    Ruohang FengEssay

    Life at 28

    Life at 28 Another Mid-Autumn Festival, another year older. My solar birthday (September 21st) coinciding with Mid-Autumn Festival should only happen three times in my lifetime: once at age 9 in 2002, once at age 28 in 2021, and the last time at age …

    Life at 28 Another Mid-Autumn Festival, another year older. My solar birthday (September 21st) coinciding with Mid-Autumn Festival should only happen three times in my lifetime: once at age 9 in 2002, once at age 28 in 2021, and the last time at age …

  • Farewell to Grandfather

    By Ruohang Feng In Miscs 2088 words 10 min

    Ruohang FengEssay

    Farewell to Grandfather

    Although 2020 was a year of many disasters, until grandfather’s death, I always thought we could somehow get by. The death of a close relative—this is the second time for me. First my father, then my grandfather. Humans appear so powerless before …

    Although 2020 was a year of many disasters, until grandfather’s death, I always thought we could somehow get by. The death of a close relative—this is the second time for me. First my father, then my grandfather. Humans appear so powerless before …

  • Practical Cryptography Made Simple

    By Ruohang Feng In Miscs 1354 words 3 min

    Ruohang FengEssay

    Practical Cryptography Made Simple

    Original WeChat Article A classic problem in cryptography is how to transmit data securely and reliably through insecure channels. Protecting your chats and communications from eavesdropping, surveillance, and censorship. With just a computer at …

    Original WeChat Article A classic problem in cryptography is how to transmit data securely and reliably through insecure channels. Protecting your chats and communications from eavesdropping, surveillance, and censorship. With just a computer at …

  • The Sorrow of the Internet

    By Ruohang Feng In Miscs 2855 words 14 min

    Ruohang FengEssay

    The Sorrow of the Internet

    In Understanding the Internet, I discussed my views on the internet. Today, let’s talk about the part I deliberately omitted: the setbacks the internet will face. Destiny It was the best of times, it was the worst of times; It was the age of wisdom, …

    In Understanding the Internet, I discussed my views on the internet. Today, let’s talk about the part I deliberately omitted: the setbacks the internet will face. Destiny It was the best of times, it was the worst of times; It was the age of wisdom, …

  • New Year Reflections

    By Ruohang Feng In Miscs 4681 words 23 min

    Ruohang FengEssay

    New Year Reflections

    This article may cause discomfort. Please read with caution. During this rare leisure time alone in the New Year, I write these random thoughts, writing wherever my mind wanders. I’ve always believed that choice is more important than effort: a …

    This article may cause discomfort. Please read with caution. During this rare leisure time alone in the New Year, I write these random thoughts, writing wherever my mind wanders. I’ve always believed that choice is more important than effort: a …

  • The Internet Winter

    By Ruohang Feng In Miscs 2195 words 11 min

    Ruohang FengEssay

    The Internet Winter

    It was the best of times, it was the worst of times; It was the age of wisdom, it was the age of foolishness; It was the epoch of belief, it was the epoch of incredulity; It was the season of Light, it was the season of Darkness; It was the spring …

    It was the best of times, it was the worst of times; It was the age of wisdom, it was the age of foolishness; It was the epoch of belief, it was the epoch of incredulity; It was the season of Light, it was the season of Darkness; It was the spring …

  • Knowledge of China's Administrative Divisions

    By Ruohang Feng In Miscs 2285 words 11 min

    Ruohang FengEssay

    Knowledge of China's Administrative Divisions

    China’s administrative divisions are divided into several levels. The constitution stipulates three levels, but there are actually five levels: the four-tier system of “province—region—county (district)—township,” which becomes five tiers when …

    China’s administrative divisions are divided into several levels. The constitution stipulates three levels, but there are actually five levels: the four-tier system of “province—region—county (district)—township,” which becomes five tiers when …