Many ancient articles were written for politically correct purposes, and not all of them were correct.
Like Bian Xiao, I can only talk nonsense with a little knowledge!
Bian Que is not a medical figure, and three articles about seeing a doctor are actually political fables.
Zhang Heng was an ancient scientist, but he was not divorced from the cognition of that era. The full name of seismograph is waiting for seismograph, which actually uses geomantic omen to predict earthquakes.
As for the stories of several national heroes, they are actually politically correct propaganda. Yue Fei is not the only one who opposes Venus. Why only promote him? Qu Yuan's character is entirely due to his failure in the history books. Most of Qu Yuan's records were written by Sima Qian alone, and there is little evidence to corroborate each other. Other history books are just a cursory look, and it is impossible to know whether Qu Yuan is a new name or a representative of a group. .
To sum up, the records are inaccurate and controversial and need to be deleted or modified, which has a positive effect on students and exams. Otherwise, no one is in charge of the fork, at least there won't be too many objections to the score during the exam.
As for Wei Qing, Wen Tianxiang and other reasons, they are also deleted. Probably, it is estimated that this has little to do with politics and economy, and it is all about honesty. In layman's terms, it is loyalty. Just know this yourself, there is no need to go online.