不偏之谓中，不易之谓庸。中者，天下之正道；庸者，天下之定理。
不偏不倚叫做中，不改变叫做庸。中是天下正确的道路，庸是天下不变的法则。
The future of mining lies in intelligent and green technologies.
过去不是一条线，而是一片风景。
The world needs more scientists who think like engineers, and more engineers who think like scientists.
If you are going through hell， keep going.