Every bit of knowledge is a sesame seed — gathered into a garden that blossoms step by step
Maker Studio · Tech learning & hands-on space
Programming languages, software engineering, dev tools, tech blog… from beginner to architect, systematically build your technical skill stack. Certification sprints · full-stack practice — prepare for exams and grow your career at the same time.
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Kids Academy · Growth & playful subjects
🔥 New: Times Table Duck Fun geography, interactive math, English dictation, Chinese practice, interactive games… let kids explore with joy and grow through interaction. 3D spatial thinking · interactive geometry to spark spatial imagination.
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Sharing frontend development, tool tips and programming practice — a record of the tech exploration journey
1 hand-picked practical online tools for development, media, learning and more
Interactive learning experiences powered by AI — explore where programming meets artificial intelligence
Curated practical tutorials on math, English, databases and more — learn something new with ease
Notes from reading Hedy Zhang's 10,000-word guide on delivering enterprise AI knowledge bases from 0 to 1: the real difficulty is never the model — it's documents, people, permissions, systems, scope, and acceptance. Includes an implementation checklist.
How indexing C:\codes\zhimalab with codebase-memory-mcp failed: a catch-all error swallowed the real cause, two red herrings (a broken cache tree and C:\tmp's DACL) led me astray, and a clean clone + file bisection finally pinned it to an 85-byte stray file named nul — a Windows reserved device name.
A minimal explainer of WebAssembly: what it is, the five fundamental problems it solves, and when not to use it. It is not about “JS being slow” — it is about the capability ceiling of the Web platform.
Validate and beautify with one click — an everyday must-have for developers
Record your screen and webcam online, with multiple output formats
Convert between multiple text encodings, handy for debugging
Full-screen or region capture with one-click save
Record, play back and download audio online
A speech-recognition runner — run and say the words out loud to pass obstacles
An interactive knowledge map of elementary math covering all topics from grade 1 to grade 6
Start LearningA 3D cartoon map of China — tap each province to explore local food, landmarks and fun facts, learning while playing
Start ExploringFrom zero to Python programming in 21 days of interactive lessons
Start LearningGet started in 21 lessons, from SQL syntax to query optimization
Start LearningMaster version control, branching and team collaboration in 7 days
Start LearningFun English learning for primary school kids — vocabulary, grammar and interactive practice
Start LearningParabola cannons, circuit puzzles, spring oscillators, light refraction and elastic collisions
Start ExploringBuild 3D blocks and view them from the front, left and top to understand spatial observation
Start ExperiencingThe Cao Chong weighs an elephant experiment: drag blocks into a glass and watch the water rise to measure irregular volumes
Start ExperimentingSmall as a sesame seed may be, many of them make a garden. This site gathers personally developed interactive tutorials and tools — each piece of content is like a tiny sesame seed, unremarkable on its own, but together they grow into a garden. It also echoes the saying “sesame blossoms rise higher and higher” — a wish to grow together with you, step by step.