I think frugality drives innovation， just like other constraints do. One of the only ways to get out of a tight box is to invent your way out.

数学的美在于它是永恒的，它不会改变。

I'm not a role model, I'm just a kid who's trying to figure it out.

创新是企业发展的第一动力，没有创新就没有未来。