About
Welcome!
Hi, I’m Han Yu. Thanks for stopping by!
I’m a product-minded engineer with a deep curiosity about how Generative AI works under the hood. The pace of change in this field can feel relentless – new models, new techniques, new benchmarks, new applications every week. I’ve found that the best way to cut through the noise is to go deeper.
Understanding how the basic things work – tokenization, attention, training dynamics, reinforcement learning – doesn’t just satisfy curiosity. It builds a foundation that makes the constant stream of breakthroughs feel less like disruptions and more like natural progressions. Depth brings clarity, and clarity brings calm.
This blog documents that journey: building things from scratch, one concept at a time, so that the next wave of change feels a little less overwhelming and a lot more exciting.