The goal of mathematics is to make the simple complicated, and the complicated simple.

I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross and concentrating. Also, dogs are faithful and they do not tell lies because they cannot talk.

我们不是在卖水，我们是在卖健康和生活品质。

生活是世界上最罕见的事情。大多数人只是存在，仅此而已。

"History is not just about the past; it is a living entity that shapes our present and future."

永远不要为了速度而牺牲质量。