"Wu Dalang opens a shop" means that some people are jealous of talents and do not dare to hire people with higher skills than themselves, fearing that people with higher skills will take away their jobs. Used to satirize those who are petty and do not work hard to improve their abilities, but are always jealous of others.

Wu Dalang’s decision to open a store was an afterthought. The full sentence is: Wu Dalang opens a shop--no need for those with high self-esteem.

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1. Wu Dalang, a fictional character in "Water Margin". There is no prototype of the character. He is the eldest brother of the Wu family. He is called Wu Dalang and is from Qinghe County, Hebei Province. Both of his parents died when he was young, and he raised his brother Wu Song through hardships. He made a living selling cooking cakes and married Pan Jinlian, who was later killed.

It was compiled by Shi Naian based on the story of the traveler Wu Song and Wu Song fighting the tiger described in "The Legacy of Xuanhe of the Song Dynasty" by Anonymous of the Yuan Dynasty and "The Thirty-Six People of Songjiang" written by Gong Kai of the Yuan Dynasty. A new character (according to "Zhejiang General Chronicle", Wu Song was a homeless man who often performed in the Yongjinmen area and had no brother).

2. Xiehouyu is a special language form created by the Chinese working people in their daily life practice since ancient times. It is a short, funny, and figurative sentence that generally has a specific meaning.

It consists of two parts: the former part plays the role of "introduction", like the face of a riddle, and the latter part plays the role of "backing", like the answer to a riddle, which is very natural and appropriate.

In a certain language environment, usually the first half is spoken, and the second half can be understood and guessed by "resting" the second half, so it is called "Xiehouyu".