The word "Dong" in this idiom refers to the workplace where ancient chefs in China cut meat and cooked, and it can also refer to the profession of chef.

Expand knowledge: know how to become an expert.

My understanding of Niu Pinyin is páo děng Jiěniú, which means that after repeated practice, I have mastered the objective laws of things, and I can do things with ease and use them freely. This idiom is generally used as an object and attribute in sentences, and is often used with "You are comfortable".

The source of this idiom is a fable in Master Zhuangzi, which tells the story of a chef named Kenting. He dissected a cow so skillfully that all parts of the cow were cut accurately. This story was later used to describe a person who is very skilled and proficient in a certain field.

Familiar with the meaning of this idiom.

This idiom reveals a method of keeping in good health. Zhuangzi used knives to describe people, cows to organize complex society, and knives to explain cows to describe people's social life. Zhuangzi believes that people should find ways to adapt to society and avoid all kinds of contradictions in real life, so as not to be hurt.

This idiom vividly shows that as long as people master objective laws and use them flexibly, they can be liberated from necessity and gain real freedom. We should also pay attention to mastering methods in repeated practice, rather than blindly repeating them.

Idiom story of a skillful craftsman knowing a cow.

This story tells the story of a chef named Kenting who slaughtered cattle for Wen. My skilled knife cutter makes the anatomy of the cow very accurate, so that all parts of the cow are cut just right. My master said that he could understand cows so skillfully because he not only pursued skill, but also pursued understanding of Tao.

He explained that when I first learned about cows, I saw the whole cow; But after a long period of practice and exploration, he has now reached the state of feeling the structure of the cow with his heart instead of seeing it with his eyes, and dissecting it along the natural structure of the cow, so that the blade can remain sharp and comfortable.