Hi, I’m Dapeng Feng你好，我是冯大鹏.

Turn abstract concepts into things you can observe.把抽象的概念，变成可以观察的东西。

I use this site to explore mathematics, physics, and programming. A derivation, a diagram, or an experiment with a parameter to change can be a starting point for understanding.我用这个网站记录数学、物理和编程中的思考。一次推导、一张图、一个可调节参数的实验，都可以成为理解的起点。

Code performance is another focus: from memory layout to GPU computing, from intuition to reproducible measurement. These notes record assumptions and boundaries alongside conclusions.这里也关注代码的性能：从存储布局到 GPU 计算，从一个直觉到一次可复现的测量。既记录结论，也保留假设、条件和边界。

What’s inside the lab?这个实验室里有什么？

Visual explanations of mathematics and algorithms, interactive physical and dynamical models, systems programming notes, and experiments in benchmarking.数学与算法的图形解释，物理与动力系统的交互模型，系统编程的经验，以及基准测试的设计与测量方法。