Projects

Course notes & materials from my studies at SUSTech, UC Berkeley, Oxford, and beyond — handwritten & LaTeX notes, homework, and projects. Web-native notes on the Notion branch.

my personal space at a corner of human made internet :D @kaiiiichen

Pure-logic Sudoku for iPhone, wrapped in a terminal fantasy. Free, private, and open source.

Buttercut is a personal-site theme for Next.js (App Router, React 19) that wants you to ship something beautiful without wrestling the codebase every weekend.

[UC Berkeley AI Hackathon 2026] Is the AI down, or is it you? WatchTower AI probes Claude, GPT & Gemini in real time, tells you whose fault it is, and catches outages before the official status page does.