What is Tixiao Shan's area of expertise?

Tixiao Shan is like a super-smart teacher who helps people understand shapes and spaces, especially when they’re tricky or twisty.

Imagine you're playing with building blocks, stacking them in different ways to make cool structures. Tixiao Shan studies how these shapes fit together, grow, and change, just like how buildings are made, or roads curve around a park.

Think of a map. When you look at a map, it's flat, but the world is round. Tixiao Shan helps figure out how to make that flat map match the real world, kind of like turning a 3D puzzle into a 2D picture so we can read it easily.

It’s also used in video games! When you move around in a game and see the world change as you go higher or lower, Tixiao Shan helps make sure everything looks just right. It's like giving the game a smart brain that knows how to draw the world from any angle.