The case of evocation once happened in the prosperous time of Kanggan. Suddenly one day in Jiangnan, it is widely rumored that as long as people write the names and characters of their enemies on paper and then step on their shoes, they will die. It can be said that there is no scientific basis at all, and they are rumors, but somehow these rumors caused panic among the people at that time.
At that time, the people in Jiangnan really thought that people would die if they stepped on their enemies' names, so they exposed each other to protect themselves and sent them to the government. Some even take the initiative to kill the enemy for their own safety. The case of evocation first occurred in Jiangnan area, but it didn't take long for it to spread all over the country. This case once attracted the attention of Emperor Qianlong, so the emperor sent many ministers to investigate this matter.
However, because this incident has no scientific basis, it is only a rumor, so even if officials arrested the so-called "prisoners" at that time, it still could not stop the spread of this rumor. And at that time, most of these people they arrested were very innocent. The reason why this case can shake the whole Qing Dynasty is mainly because of its own vigilance. At that time, it can be said that the Qing emperor's accession to the throne was not orthodox, but was won from the Han people. Therefore, they are naturally wary of the Han people. Under this kind of psychology, coupled with the increasingly serious oppression of the people by the government at that time, the people were also worried and extremely insecure.