Who was the master of Yao, the prime minister in black in Ming Dynasty?

Yao became a monk at the age of fourteen and became famous. Although he is a monk, he worships the Taoist priest as his teacher! His Taoist priest is not a simple person, his name is Xi Yingzhen, and this person is also a strange person. As a Taoist, he doesn't go to alchemy, but specializes in Yin and Yang. Yan Tao followed him and learned these things. The so-called Yinshu has a long history and complicated contents, including divination, astronomy, tactics, breaking machines and so on. These things were regarded as heresies at that time, and people like gentlemen often dismissed them. But in fact, the theory of Yin and Yang contains a profound understanding and analysis of social reality, and is a summary and generalization of previous experience.