Lu You's "Winter Night Reading Shows Ziyu": "The ancients spared no effort in learning, and they only matured when they were young and old. What you read on paper will always feel shallow, and you will definitely know that you must practice it."

The main idea of ??the poem is that the ancients spared no effort in learning. And they strive for it all their lives, often starting when they are young and achieving success in old age. The knowledge obtained from books is ultimately shallow, and the true meaning of knowledge cannot be understood. If you want to truly understand the profound principles in the book, you must practice it. ① Practicing means practicing and doing it personally, which reflects the spirit of attaching importance to practice and in-depth practice.

②Moral cultivation is closely related to social practice. Only in daily life, that is, in various relationships with others and the collective, can a person more clearly realize which of his actions are moral and which are immoral. Similarly, overcoming immoral thoughts and behaviors can only be achieved through social practice. Therefore, "practicing one's actions" is undoubtedly an important way for people to improve their moral cultivation.

③ In his article "The Story of Shizhong Mountain", Su Shi narrated the story of his in-depth field investigation and uncovered the mystery of the name of Shizhong Mountain. Su Shi's actions were passed down as a good story by later generations. This idiom It is also said that one should try one's best and practice one's actions.