This is a quick animation about an old Chinese saying: 逆水行舟，不进则退。Life is like rowing a boat in a river. If you are not moving forward, you are left behind. My math teacher Mr.Kang always printed this on our test papers or notes. I am really grateful that I can have a great teacher like Mr.Kang. I did not go to his class anymore after high school, but I always remember him, not only the math works but also the attitude of life. Thanks!
JIayun
