Dai Zhen didn't speak until 10 years old, probably because he had accumulated wisdom for too long. Read after the teacher and recite it once. You won't stop reciting thousands of words every day. After the teacher taught "University Chapters and Sentences" to "Right Classics Chapters and Sentences", (Dai Zhen) asked the teacher, "How do you know that it was Confucius' words, but it was recorded by Ceng Zi? How do you know this is what Ceng Zi meant, but his students wrote it down? " The teacher answered him, "This is what Zhu said. "(He) immediately asked:" When did Zhu Wengong come? "(The teacher) answered him:" Song Dynasty people. " (Dai Zhen asks the teacher): "Ceng Zi, when was Confucius?" (Teacher) said: "Zhou Dynasty people. Dai Zhen asked, "How many years were there between the Zhou Dynasty and the Song Dynasty?" ? "(The teacher) said," Almost two thousand years. " (Dai Zhen asks the teacher): "In this case, how can Zhu know? The teacher was speechless and said, "This is not an ordinary child." "

The above translation is from Baidu Encyclopedia.

My personal analysis is as follows:

The article did not say that Mr. Xue was not angry or praised.

It's just that Mr. Xue couldn't answer, so he went down the steps and said he was an unusual child.