What does it mean to kill the master with one punch?

Killing a master is a folk saying, which means that you don't talk about rules, rules, rushing around, stumbling, and being wrong is wrong. It is obviously metaphorical to describe similar phenomena at all levels of social life by punching and killing a master at random, and it refers to a wide range, but those who do not play cards according to common sense, win in chaos and lose the bid are included.

Common saying story:

A boxer who had not studied for a long time came back and had an argument with his eager wife. The boxer thinks I learned martial arts, but I'm still afraid of you. It never occurred to me that my wife rushed up before posing and beat him black and blue, unable to move. Afterwards, others asked him: since he learned martial arts, why did he still lose to his wife? The boxer said, if she doesn't punch according to the moves, how can I fight? This is of course a joke, and the boxer's defeat is naturally due to his poor academic foundation. However, this story also brings us a lot of enlightenment. People have long said that the master was beaten to death, which means that if everything is disorganized, even the master can't cope.