However, the most famous story is telling the fortune of Wu Zetian. According to the Book of Tang Dynasty, when Wu Zetian was just born, Yuan Tiangang was surprised to see Wu Zetian's mother and said, Madam, you gave birth to a wonderful child! So Wu Zetian's mother called her two sons out and asked Yuan Tiangang to see the doctor. Wu Zetian, a wet nurse in men's clothing, came out to make Yuan Tiangang look familiar. Yuan Tiangang was shocked after reading it, then shook his head regretfully and said? Unfortunately, it's a man. If it is a woman, can it be the son of heaven? . Facts have proved that Yuan Tiangang's calculation is really accurate. Although Wu Zetian is a woman, it has not affected her to sit on the throne. Later, Wu Zetian became king and trusted Yuan Tiangang. Wu Zetian never found a suitable place for her grave, so she sent Yuan Tiangang to help her find it. Finally, Yuan Tiangang found a treasure for Wu Zetian.
Fang and Li in the period of Emperor Taizong were also very popular with Yuan Tiangang. There is a very interesting story between these people. Li thinks highly of himself. He looked down on Fang, so he asked Yuan Tiangang to help them calculate their fortune. Yuan Tiangang said that Li could do five things at most, but Li was unconvinced. He asked Fang how big an official he could be. Yuan Tiangang said, if you want to be a five-grade official, you should go to ask for help. In the end, he really became the prime minister of Fang.
Tutui, written by Yuan Tiangang and Li, was later destroyed by the king of Chu because of its accurate prediction. The push we see now is basically fake. According to unofficial history, Yuan Tiangang predicted that he could only live to be 52 years old, and he did live to be 52 years old, but the official history did not record how Yuan Tiangang died.