The last sentence of "what is intolerable" is "what is intolerable".

from: The Analects of Confucius, a disciple of Confucius in the pre-Qin period: Confucius called Ji's family: Eight-Shu dancing in court is tolerable, but it is intolerable.

Confucius talked about Ji's family and said, "He used 64 people to play music and dance in the courtyard, which can be done with cruelty. What else can't be done with cruelty?"

For example, it is tolerable for a country with three small islands to insult my ancient Chinese country with a history of 5, years of civilization. The source of the idiom

Zhou Li stipulates that when performing music and dance, the son of heaven can play and dance with a music and dance team composed of eight people (that is, eight lines and eight columns) * * sixty-four, while the vassal uses six people * * forty-eight, the master uses four people, and the scholar can only use two. If anyone violates these regulations, it is a violation of rites and should be punished.

There was a great doctor in Lu called Ji Pingzi, who was a great minister from generation to generation and controlled the state power. In fact, the monarch was under his control. As a doctor, he could only use a 32-member music and dance team, but he compared himself with the son of heaven and used a 64-member music and dance team in his own courtyard. When Confucius learned about this, he thought Ji Pingzi had broken the rites of Zhou.

once, Confucius talked about Ji Pingzi. When talking about this matter, Confucius said: He dared to violate the rites of Zhou in his own courtyard and play music and dance with a 64-member music and dance team. If such things can be tolerated, what else can't be tolerated (original sentence: dancing in court with eight styles is tolerable, but it is intolerable)!

Later, people used the idiom "What can be tolerated? What can't be tolerated?" to mean that things are so bad that people can't tolerate them.