227. Missing May 中
The cover video was taken while returning from Qiandao Lake to Hangzhou in early May. The weather after the rain was very cool. I really love the mountain mist and greenery—quite a contrast to the intense heat of this weekend.
Record the down-to-earth trending technologies seen every week, and publish them here after screening. If you find it good, you can follow this weekly to get update notifications.
Trending Tools
Apple iOS 26 Library Sketch Design File
https://sketch.com/s/f63aa308-1f82-498c-8019-530f3b846db9
The Sketch design library for Apple iOS 26 might be useful for those designing new software. Apple’s “multi-device consistency” in the VR era—while I feel their designs aren’t always great at first, I usually get used to them after a while.
Visualization of Subway Lines in Chinese Cities
https://subway.cuvii.dev
A fun tool for map enthusiasts: visualizations of metro lines in Chinese cities. Hangzhou has more lines than I thought. You can choose a city and line to see detailed station routes.
LibreTube: Alternative YouTube Client for Android
https://github.com/libre-tube/LibreTube
If you use Android, try this third-party YouTube client; the interface is quite beautiful.
Just Looking Around
Meituan Tech: Trusted Experiment White Paper
https://tech.meituan.com/2025/05/22/meituan-ab-online-controlled-experiment-01.html
Meituan Tech is publishing a “Trusted Experiment White Paper,” discussing various methodologies for experiments during business processes, from AB testing, randomized controlled trials, randomized rotation, and quasi-experiments. They are currently on part 06; worth a read.
OpenAI’s Practical Guide to Building AI Agents
https://cdn.openai.com/business-guides-and-resources/a-practical-guide-to-building-agents.pdf
Worth a look; the PDF download link is above.
How we built our multi-agent research system
https://anthropic.com/engineering/built-multi-agent-research-system
Claude also recently released an article on how they built their multi-agent research system. You can read it in comparison with the OpenAI guide. Time to catch up on some reading.
Random Listening: Nicholas Tse’s “Because of Love, so Love” on tape on a weekend night
Headphones recommended if you’re in an office to avoid disturbing colleagues.