What are the four words to describe "hard work"?

Study hard and practice hard, catch a glimpse of the snow, make a living without mercy, make a living in ice and snow, attack hard at night, hang a beam and stab a stock, draw a cone and stab a stock, compile Wei San Jue, and hang a book in the corner.

First, study hard and practice hard.

Description: study hard and train well.

Said by: The Secret of Modern Qin Mu: "After listening to this, my son never dares to take shortcuts by luck again. After real efforts, he finally became a calligrapher. "

Second, the balloon fireflies reflected snow [ná ng yí ng yí ng xu ě]

Commentary: It turns out that Che Yin takes care of books with fireflies in his pocket, while Sun Kang studies hard with the reflection of snow. After that, I described studying hard.

From: Yuan Jia Zhong Ming's Xiao Shulan, the first fold: "Although I have no sweat and sleep, I have suffered from the snow."

Although I have not suffered from the weather, I have studied hard.

Three, hanging beam thorn 【 Xu Liangbing 】

Description: Describe studying hard.

From: The Warring States Policy Qin Ce I by Liu Xiang in the Western Han Dynasty: (Su Qin) was sleepy when he was studying, and he was bleeding from his feet. "

Su Qin tried to sleep while studying, stabbed himself in the thigh with an awl, and blood flowed to his feet.

Fourth, Bian Wei's three musts.

Commentary: Bian Wei: Weaving bamboo slips with cooked cowhide ropes; Three: divisor, which means many times; Absolutely: broken. The leather rope for weaving bamboo slips was broken three times. Metaphor is studying hard.

From: Historical Records of Confucius by Sima Qian in the Han Dynasty: "Reading the Book of Changes, Wei compiled three unique skills."

Confucius read the Book of Changes and turned over bamboo slips three times.

Verb (abbreviation of verb) hangs a book in the corner [niúJi m:o guàsh]

Explanation: It is a metaphor for studying hard.

From: Biography of Li Mi in the New Tang Dynasty: "Ride an ox with a shovel, hang it in a corner of the Han Dynasty, and read it."

Take Pu as a cushion cow, hang Han Shu on the corner, and read while walking.