This sentence comes from the famous writer Han Yu, the leader of the Eight Great Masters of Tang and Song Dynasties. It is a famous saying about his academic studies and aims to encourage people to read more without fear of hardship. This sentence is also included in "Zengguang Xianwen".

In the ancient saying "Zengguang Xianwen", there is a famous academic couplet by Han Yu, a famous poet and philosopher in the Tang Dynasty of my country: "There are roads in the mountains of books, and diligence is the path, and the sea of ??learning is boundless and the boat is made by hard work." Han Yu’s words are intended to tell people that on the road to reading and learning, there are no shortcuts and no smooth sailing. If you want to learn more and broader knowledge from the vast mountains of books and oceans of learning, you must “diligence” and "concentration" are two essential and best conditions.