1. As long as you work hard, an iron pestle can be ground into a needle.

2. Practice brings true knowledge.

3. The willow will not be considered alive if it is alive, and the jujube tree will not be dead if it is not alive.

4. If you walk every day, you are not afraid of thousands of miles; if you do it often, you are not afraid of thousands of things.

5. Go down the river to know the depth, and taste the pears to know the sweetness and sourness.

6. Don’t look at the surface of the river as flat as a mirror, look at the depth of the water.