Take Du Fu as an example. "Fu" means "beautiful", so Du Fu's word "Zimei" means that you are more beautiful than me;
Another example is Han Yu , "Yu" means "exceed", so Han Yu's word "retreat" means that I don't need to be stronger than others, which is a self-effacing expression;
Another one, Tao Yuanming, "Yuanming" is him His real name is "Tao Qian". "Qian" means "hidden", and there is also the "Book of Changes": "Do not use Qianlong", which does not have a very good meaning, so the word "Yuanming" is probably taken from the "Book of Changes": "Maybe leap in The meaning of "Yuan, no blame"
Zhang Juzheng-original name is Zhang Baigui. It was because when he went to the provincial examination when he was 13 years old, his examiner had a dream at night. He dreamed that GOD was taking a child and gave him (the examiner) a piece of jade. The next day during the provincial examination. The examiner saw that the child Zhang Baigui looked exactly like the child in his dream. Reminds me of the jade gift from GOD. So the child Zhang Baigui was renamed Ju Zheng.
When Li Bai was one year old, he grabbed a book of songs. His father was very happy and thought that his son might become a famous poet when he grew up, so he wanted to give Li Bai a good name. Lest future generations laugh at themselves for their lack of knowledge. Because he was cautious about naming his son, the more cautious he was, the less likely he was to come up with it. Until my son was seven years old, he still hadn't decided on a suitable name.
In the spring of that year, Li Bai's father said to his wife and children: "I want to write a spring quatrain. I will only write two sentences. Each of you, mother and son, will add one to me, so I can make do. One sentence is "The spring breeze brings warmth." "Every flower blooms", one sentence is "It comes first when spring blooms."
My mother thought for a long time and said: "The fire burns the apricot forest and the red clouds fall."
Li Bai and other mothers. After that, he pointed to the plum tree in full bloom in the courtyard without thinking, and blurted out: "The plum blossoms are in full bloom and the tree is white."
When the father heard this, he clapped his hands and applauded. Sure enough, his son was talented in poetry. The more he thought about it, the more he liked it. As he thought about it, he suddenly thought that the first word of this poem was not his own surname. This last white character is so well used, it just says that a tree of plum blossoms is as holy as snow. So he named his son Li Bai.
Hope it helps!