Essays
工作之余的思考与记录 — 技术实践、生活观察与那些难以归类的事。 Thoughts beyond the server room — technology, life observations, and everything in between.
从颈部不适到 AirPods 头部追踪，一个颈部训练 App 的由来。From neck pain to AirPods head tracking — how a neck training app came to be.
阅读全文Read more从十几年前盯着 Super PI 进度条的记忆，到自己写一个 iPhone 上的圆周率计算器——Chudnovsky 算法、Swift BigInt、多核并行，以及 AI 协作开发的一些体会。From staring at Super PI's progress bar years ago, to building a pi calculator for iPhone — Chudnovsky algorithm, Swift BigInt, multi-core parallelism, and some thoughts on developing with AI.
阅读全文Read more春天来了，油菜花开了。站在田边，那些压着的事情，好像轻了一点。Spring arrived, the rapeseed flowers opened. Standing by the field, the things weighing on me felt a little lighter.
阅读全文Read more想在飞书里发一条消息就能得到 AI 回应。把 OpenClaw 部署在群晖 NAS 上，踩了几个坑，系统跑起来了。I wanted to send a message in Lark and get an AI response. Deployed OpenClaw on a Synology NAS, hit a few walls, and got it running.
阅读全文Read more从手动上传到 GitHub Actions 自动部署，聊聊这个个人网站背后的架构思路——为什么这样设计，每一层解决了什么问题。From manual FTP uploads to automated GitHub Actions deployment — the architecture behind this site, and why it's designed this way.
阅读全文Read more设备在线、App 没报错，但就是不工作——这类问题背后很多时候是同一个东西在作怪：mDNS。Device shows online, app reports no errors, but nothing works. More often than not, the culprit is the same thing: mDNS.
阅读全文Read more表姐的女儿因为婴儿时的一场高烧留下了智力发育迟缓。但在父母的无私陪伴下，她创立了自己的咖啡品牌，成为了特奥会东亚区运动员领袖。My cousin's daughter was left with intellectual developmental delays after a high fever as an infant. With her parents' unwavering support, she built her own coffee brand and became a Special Olympics East Asia athlete leader.
阅读全文Read moreUbiquiti 交换机的端口指示灯没法在 APP 或网页端关闭，晚上闪个不停。其实可以 SSH 进去用一条命令解决——但有个 bug 要注意。Ubiquiti switch port LEDs can't be turned off from the app or web UI. There's a one-line SSH fix — but with a quirk worth knowing about.
阅读全文Read more去华山医院验血，付费之后发现登记系统宕机了。人工窗口、自助机器全部失灵，候诊区人山人海，技术人员在众目睽睽之下排障。等待的那半小时，让我想了很多。Went to Huashan Hospital for a blood test. After paying, the registration system was down — both the self-service machines and the staffed counters. Technicians troubleshooted in front of a crowd. The half hour wait left me thinking.
阅读全文Read more我在 crontab 里加了一行让 Passwall 重启的任务，但每次重启路由器之后，那行命令就消失了。折腾了一圈之后发现，是 Passwall 自己把它删掉的。I added a cron job to restart Passwall when it crashed. After every reboot, the line was gone. Turns out Passwall was deleting it itself.
阅读全文Read more1993年地铁开通的时候我还在上海，但那时候年轻，地铁对我来说只是个新鲜事物。2006年回来之后，才真正感受到这张网有多大。I was still in Shanghai when Line 1 opened in 1993, but I was young and didn't think much of it. Coming back in 2006 was when I truly felt how much the network had grown.
阅读全文Read more春节档看了《飞驰人生3》，票房36亿，口碑不错。我觉得它好看，但说不上来好在哪里——后来想明白了，它根本不是在讲赛车。Caught Race to Survive 3 over the Spring Festival. Box office hit, decent reviews. I enjoyed it but couldn't say why at first — then I realized it isn't really about racing at all.
阅读全文Read more不是产品评测，是一个把 HomeKit、HA、Matter 都玩了一遍之后，关于「为什么要折腾」的思考。Not a product review — but a reflection on why I keep tinkering with HomeKit, Home Assistant, and Matter, even when it sometimes drives me crazy.
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