The following examples of idioms and poems that highlight self-improvement include:

1. Nothing is difficult in the world if you work hard

2. No matter how hard you work, you will gain a lot.

3. Only by enduring hardship can one become a master.

4. Diligence is more important than hard work, and playfulness is more important than play

5. If a young man does not work hard, the old man will be sad.

6. There is no time to warm the Kongxi, and there is no time to wear the ink in Guizhou.

7. Be self-reliant and self-sufficient. From beginning to end, work hard, strive hard, and strive endlessly