The original sentence is: I don't know the sentence, I don't understand, I don't know, I don't know, I don't know, I don't know, I don't know, I don't know.
I can't understand the words in the book, and I can't solve the big doubts. Some (words in the book) learn from the teacher, some (big questions) don't ask the teacher, learn from small aspects, and give up (don't learn) in big places. I don't think this is wise.
It satirizes the attitude of learning from teachers and the necessity and importance of learning from teachers. Learning is comprehensive and should not be a part of learning, which is extremely unwise.
Extended data:
Han Yu (768-824) was born in Heyang, Hanoi (now Meng County, Henan Province). Because its county looks Changli, it is called "Han Changli" in the world. In the eighth year of Zhenyuan in Dezong (792), he became a scholar. In the 19th year of Zhenyuan (803), due to the drought in Guanzhong, he angered the powerful minister and was demoted to Yangshan order. In the first year of Xian Zongyuan's reign (806), he called on Dr. Guo Zi.
In the 12th year of Yuanhe (8 17), he won meritorious service from Pei Du for Wu Yuanji in Huaixi. In the 14th year of Yuanhe, he was promoted to assistant minister of punishments. Use Buddhist bones to remonstrate and belittle Chaozhou secretariat. Later, he served as a national wine offering, assistant minister of the official department and Jing Zhaoyin. He strongly advocated the movement of ancient prose, and his prose was listed as the first of the "Eight Masters in Tang and Song Dynasties", and he was also called "Liu Han" with Liu Zongyuan.
References:
Baidu Encyclopedia-Shi Shuo (Han Yu's article)