There really is a grandfather of Jiangxiang School in history.

There is really a superstitious gang called "Jiangxiang School" in history. However, the character of Grandpa is fictional by the author of the novel, and there is no such character in history.

Jiangxiang School is a group of swindlers who rely on fortune telling to find fortune. "Jiang" refers to rivers and lakes, and "Xiang" refers to the prime minister; Together, they are the prime ministers in the Jianghu. Generally, they analyze and convince people under the banner of physiognomy, and then cheat. According to the published information, this sect was popular in Guangzhou and Hong Kong in the early years of the Republic of China.