Famous aphorisms from ancient Chinese celebrities?

1. When the rivers reach the sea from the east to the sea, when will they return to the west? If a young man does not work hard, the old man will be sad. (Han Yuefu's "Long Song Xing")

2. To learn a hundred things, one must first be determined. (Zhu Xi)

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

4. The pen falls in the storm, and the poem becomes the weeping ghosts and gods. (Du Fu)

5. Don’t be a pseudo-tite pro-fengya, Zhuan Yiduo is your teacher.

(Du Fu)