I can't put it down. This idiom originally refers to Monroe, a general under Sun Quan of Soochow. When Lu Meng was under Sun Quan's account, he couldn't read, but he didn't want to study. Sun Quan took himself as an example and said, I am so busy and still studying, not to mention you? So Lv Meng repented and reformed, studied hard, put it down, and finally learned something. Later, people used the metaphor of studying very hard.

The Chinese nation is a nation that values education and loves learning. From the Three Emperors and Five Emperors to modern times, many studious historical figures have emerged in the long history, such as Kuang Heng, a famous writer in the Western Han Dynasty, and Sun Kang, a scholar in the Jin Dynasty.

Grasping scrolls is also an idiom to express one's love for learning. Originated from the biography of the reflection of Wu Shu Monroe written by historian Chen Shou: "When you are in charge of Wudang military forces, you should not hold the scroll tightly."

The protagonist in this allusion is called Monroe. After Sun Quan's constant enlightenment and self-encouragement, he finally reached the degree that Sun Quan admired, which made Sun Quan sigh that "if you don't see each other for three days, you will face each other".

Later, people gradually used books, which is a good word for a person who studies very hard.

Lv Meng in this idiom was born in A.D. 148, and his hometown is in Anhui. First, I took refuge in Sun Quan's brother Sun Ce. He fought bravely and was respected by Sun Ce. After Sun Ce's death, he continued to work for Sun Quan in Wu Dong.

Lv Meng was a rough man, but he was very loyal. He saved Sun Quan from danger many times, made great contributions to the capture of Jingzhou neutrality, and sacrificed his strategy to kill Guan Yu. Sun Quan regarded him as a confidant, and Lv Meng did his duty and eventually died at the age of 42.