1. It takes ten years to sharpen the sword, and I have lived in it for several years.

2. Don't think about the result, just enrich every day. For tomorrow, let's work together! Come on!

3. When you feel sad and miserable, you'd better learn something. Learning will make you invincible forever.

4. Notes should be easy to read and read frequently. This is another textbook.

5. Endure the pain that others can't bear, and eat the pain that others can't eat, in order to reap what others can't.