Work as skillfully as a skilled butcher cuts the carcass of a cow-do sth very skillfully/professionally.

The expert who knows cattle is an idiom, which originated from Zhuangzi's health preserving master. ?

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".

Idiom origin:

Master Zhuangzi: "I am a skilled worker who helps writers. Touch of hands, tilt of shoulders, stepping of feet, stepping of knees, sound of knives, tenor. Wen Huijun praised his skill. My expert explains Dao Yun like this: I have killed thousands of cows in my life, but now it is God's will to fool people, and I have never seen all the cows. If I cut the cow, I will be very comfortable. Therefore, although it has been used for 19 years, its sharpness is still as good as new. "

Then summed up the idiom "an expert can solve a cow".

Idiom moral:

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.