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

The sharp edge of a sword comes from sharpening, and the fragrance of plum blossoms comes from the bitter cold.

Learn it well, interrogate it, and think carefully. , distinguish clearly and practice it diligently.

Ask the canal how clear it is, so that there is a source of living water.

Learning without thinking will be in vain, and thinking without learning will be perilous.

1. Heaven moves vigorously, and a gentleman strives to constantly strive for self-improvement. - "Book of Changes"

2. If you persevere, the rotten wood will not break; if you persevere, the metal and stone can be carved. - "Xunzi· Encouraging Learning"

3. 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. - "Proverbs Lian Bi·Handling Things"

4. The so-called genius, It’s just that all the time that others spend drinking coffee is spent on work.——Lu Xun

5. Pride cannot last, desire cannot be indulged, happiness cannot be extreme, and ambition cannot be fulfilled.——Wei Zheng