When the sky moves vigorously, a gentleman strives to constantly strive for self-improvement; when the terrain is turbulent, a gentleman carries great virtues with him. This is a famous saying in the Book of Changes. These two sentences come from the two hexagrams in the "Book of Changes": Qian hexagram and Kun hexagram. The Qian hexagram represents heaven and the Kun hexagram represents the earth. The meaning of these two sentences is: the sky is vast and boundless, symbolizing that a gentleman should constantly improve and perfect himself like the sky.

1. The earth is thick and inclusive, symbolizing that a gentleman should be like the earth, with a broad mind and deep character, capable of carrying all things. The saying "God is in good health and a gentleman should strive for self-improvement" tells us that a gentleman should have the spirit of continuous self-improvement. On the road of life, we must continue to learn and make progress, and strive to improve our abilities and qualities.

2. Only in this way can we remain invincible in the fierce social competition and realize our own life value. At the same time, the spirit of continuous self-improvement is also an excellent tradition of the Chinese nation and an important driving force for the continuous development and growth of our nation. "The terrain is uneven, and a gentleman carries things with great virtue." This sentence tells us that a gentleman should have the character of carrying things with great virtue.

3. In interpersonal communication, we must have virtues such as tolerance, humility, and integrity, so as to win the respect and trust of others. At the same time, the quality of being virtuous is also the foundation for us to gain a foothold in society. A moral person can not only contribute to society, but also influence and drive people around him to work together for social harmony and progress.

Relevant knowledge about the Zhouyi is as follows:

1. The Zhouyi, also known as the "Book of Changes", or Yi for short, is one of the classical Chinese philosophy books. It has a long origin. The word "zhou" has the meanings of Zhou Mi, Zhou Pan, Zhou Liu and so on in ancient Chinese. Traditionally, people believe that "The Book of Changes" was created by Zhou people, but the exact author and the time of its completion cannot be verified. The Book of Changes is very rich in content, including sixty-four hexagrams and three hundred and eighty-four lines.

2. Each hexagram and line has corresponding explanations (hexagram words and line words), which are often used for divination. In addition, "The Book of Changes" also contains seven kinds of texts explaining hexagrams and line speeches and ten articles, collectively called "Ten Wings". These "Ten Wings" are said to have been written by Confucius. In the structure of "Book of Changes", the hexagrams are the outline of each hexagram, summarizing the good and bad meanings of each hexagram.

3. Yao Ci explains the symbolic meanings of good and bad fortune generated by the relationship between Yao and Yao; Tuan Chuan explains the hexagram name, hexagram words and hexagram shape, which can be understood as the judgment of good and bad fortune for a hexagram; Xiang Zhuan explains the good and bad fortune of a hexagram; The biography is an in-depth explanation of the principles of hexagram combinations and a further interpretation of the natural principles contained in hexagrams and line images. It is worth mentioning that the formation of "The Book of Changes" went through three stages: ancient times, medieval times, and modern times.