1. It’s easy to see something on paper, but I know it needs to be done in detail.

This sentence comes from Lu You of the Southern Song Dynasty's "Winter Night Reading to Shi Ziyu", which means that the knowledge obtained from books is ultimately superficial and fails to understand the true meaning of knowledge. To truly understand the profound principles in the book , you must practice it yourself to learn something.

2. The master leads you in, and practice is personal.

This is a common saying, which means that the master only plays a guiding role, and the study and improvement of academic or technical skills must rely on the efforts of the students themselves.

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

This sentence comes from the Diligent Chapter of "Warning to the World", which means: the sharp edge of the sword is obtained from constant sharpening, and the plum blossoms that have withstood the cold winter are even more fragrant.

4. How can you get the fragrance of plum blossoms without a bone-chilling cold?

This sentence comes from "Ode to a Discourse in the Hall" by Zen Master Huang He in the Tang Dynasty. It means: If you don't withstand the biting cold in winter, the plum blossoms will not have a tangy fragrance. It is a metaphor that people have to go through many hardships before they can achieve success.

5. If you don’t climb a high mountain, you don’t know how high the sky is; if you don’t go to a deep stream, you don’t know how thick the earth is.

This sentence comes from Xunzi's "Encouraging Learning", which means: If you don't climb the mountain, you don't know how high the sky is; if you don't face the deep stream, you don't know how thick the earth is.