Drones in the future will be as ubiquitous as smartphones are today.

I hope that in this year to come, you make mistakes. Because if you are making mistakes, then you are making new things, trying new things, learning, living, pushing yourself, changing yourself, changing your world. You're doing things you've never done before, and more importantly, you're doing something.

每一个数学问题都是通向更深入理解世界的窗口。