What is Zheng's nickname?

Name: Cao Zheng

Dungeon: Earth Star

Position: Liangshan Ranch Manager

Weapon: my ox knife

Cao Zheng, the ghost of the earth star

Cao Zheng, a disciple of Lin Chong, was born in Kaifeng, a butcher, and was called a "ghost" because of his superb means of killing pigs and peeling cattle. Because he lost money doing business for the rich man, he became his son-in-law in a farmhouse near Huangnigang. Yang Zhi was robbed in Huangnigang. He went to Cao Zheng's hotel to eat wine and had no money to pay the bill. He knew Cao Zheng without fighting. Yang Zhi went to Erlong Mountain and met Lu at the foot of the mountain. Cao Zheng used a trick to send Yang Zhihe to Erlong Mountain. Lu killed Deng Long, the mountain owner, and became the castellan with Yang Zhi. Later, Cao Zheng surrendered the Water Margin with Yang Zhi, Lu, and Shi En. Cao is in charge of the slaughter of cattle, horses, pigs and sheep in Liangshan, ranking 81st in Liangshan. When Cao conquered Fang La, he was shot to death by a medicine arrow in the battle of attacking Xuanzhou.