In the Three Kingdoms, a fortune teller guessed what Cao Cao was going to do. Who is this man?

Not a fortune teller, but an alchemist.

According to historical records, Zuo was born in Lujiang (now southwest of Lujiang), an alchemist at the end of the Eastern Han Dynasty. Live less in Tianzhu Mountain and learn alchemy. Ge Hong wrote in Bao Puzi Jin Zidan that he was Ge Xuan's teacher and "Ge Xuan accepted it out of kindness". Three volumes of Tai Ming Jing, one volume of Jiuding Single Crystal and one volume of Jinye Single Crystal. It is said that he is good at magic and once tasted a banquet with Cao Cao, who wanted Songjiang bass. Kindness caught the water in a copper plate, and Cao Cao was overjoyed. Later, at the suburban banquet, he learned through illusion that Cao Cao followed the people's wine chests to pay for the guests. Chased by Cao Cao, he followed him invisibly, and was seen hiding among the sheep at the top of the goat mountain, so he couldn't get a single soldier. In addition to the Biography of Zuo Ci in the later Han Dynasty, it is also recorded in Searching for the Gods by Gan Bao in the Eastern Jin Dynasty. There are records in Yu Fang Sheng Lan, Records of Famous Places in the World, Annals of Jiangnan and Records of Lujiang County in Qing Dynasty. There are Zuo Ci Diaoyutai, Zuo Ci Well, Touhuai Bridge, Shengxian Bridge, Baiyanggang, Yangshantou and Yuxuanguan in Lujiang, and some of them still exist today.