What does it mean to ask questions about blindness?

Excerpt from Xunzi's "Encouraging Learning" in the Warring States Period, the original excerpt:

If you ask, don't sue; Don't ask if you told anyone; Don't listen to those who talk. Don't argue with people who live up to expectations. Therefore, we should learn from it and then pick it up; Avoid it unless it is the way. Therefore, return the courtesy before you can talk to the parties; Words are fluent, and then words and deeds can be consistent and justified; Therefore, color can be followed by words and actions.

Therefore, it cannot be said in words that this is pride; Can have nothing to say, that is hidden; In terms of color, it's called ugliness. Therefore, a gentleman is not proud, not hiding, not jealous, let nature take its course. The poem says, "The son of heaven gave me comfort from bandits." This is also called.

Translation:

If someone comes to you for an impolite question, don't answer it; Talk about impolite things, don't ask questions; Say rude things in front of you, don't participate; Don't argue with savage and competitive people.

Therefore, it is necessary to conform to the principle of propriety and righteousness before giving reception; Avoid people who don't conform to the principle of propriety and righteousness; Therefore, only respectful and polite people can talk about the purpose of Tao; Only those who are fluent in writing can talk about the content of Tao; Only people with sincere attitude can talk about the profound meaning of Tao.

Therefore, talking to someone who can't talk is called impetuous; Don't talk to people who can talk to you, that's neglect; Talking casually without looking at the other person's reaction is called blindness. Therefore, a gentleman should not be impetuous, careless or blind. He should be careful with everyone who comes for advice. The Book of Songs says: "It is approved by the son of heaven not to be impetuous or negligent." That's the truth.

Extended data

Creative background:

During the Warring States period, slavery further collapsed, the feudal system gradually formed, and epoch-making changes took place in history. Many thinkers expressed their opinions on the social changes at that time from different positions and angles, and gradually formed different factions such as Mohism, Confucianism, Taoism and Legalism, which was called "a hundred schools of thought contend" in history.

A hundred schools of thought contend and wrote many books, publicizing their own views and criticizing others, resulting in a situation of "a hundred schools of thought contend". Xunzi was a representative figure of Confucianism in the late Warring States period. He believes that the existence of nature does not depend on human will, but people can use subjective efforts to understand it, adapt to it and use it. In order to reveal the significance of learning the day after tomorrow, he created the article "Encouraging Learning".