The nickname and character of the characters in Chapter 81 of Water Margin

Knife-wielding ghost, witty, intelligent and responsible. According to the relevant information of Water Margin, the nickname of No.81 is Knife Ghost. He is smart and has a sense of responsibility. Cao is a character in Water Margin, nicknamed Knife Ghost, Kaifeng, born as a butcher, and opened a hotel in Shandong to help Lu and Yang Zhi capture Erlong Mountain. Later, he joined the leaders of Sanshan to yield to Liangshan.