According to the Book of Tang, when Wu Zetian was just born, Yuan Tiangang went to Wu Zetian's home to say hello. As soon as Yuan Tiangang saw Wu Zetian's mother, he was surprised and said: Lady Fate will have a noble son born. So Wu Zetian's mother first pulled out her two children for Yuan Tiangang to see, and Yuan Tiangang just shook his head and said that it was not them. Then he led Wu Zetian's sister out, and yuan Tiangang saw that it was not yet, and then asked: Madame still has a son? Wu Zetian's mother saw this and hugged Wu Zetian out of the swaddling, and at this time Wu Zetian was wearing a man's clothes, Yuan Tiangang mistakenly thought it was a boy, but unfortunately said: "If it is a woman, it is really unpredictable, and then it should be the lord of the world."
First, Li Chunfeng ran for 9981 days to find the Ji Soil of the Dragon's Den of jiugao mountain and buried a copper coin; then let Yuan Tiangang go out to look for it, and it took 7749 days to find this place, so he pulled a silver noodle from his head and inserted it. Tang Taizong asked people to verify whether the two people chose the Dragon's Den Ji Lang was consistent, and as a result, they dug open and saw that Yuan Tiangang's silver noodles were inserted in the square hole of the copper coin. In the folk belief, Yuan Tiangang is the star of wisdom under the Tiangang Star. Yuan Tiangang predicted that he would die at the age of 52, and his end was really as the prophecy said. How Yuan Tiangang died in the main history is not recorded, only that his life number is known and his qi number has been exhausted.
Yuan Tiangang (陳天罡), a native of Chengdu, Tang Dynasty, was good at xiangren and claimed to be better than Yan Junping of han. Both the new and old Tang books are passed down (into the Fang Qi). Li Chunfeng (李淳風), a native of Tangqi Prefecture (present-day Fengxiang County, Shaanxi Province), was a native of Tang Prefecture (唐岐州, in modern Fengxiang County, Shaanxi Province), who was reckoned with the Imperial Calendar of The Imperial Household and zhenguan chu (贞觀初), in order to make the Shilang Zhitai Shi Bureau, and later moved to Taishi Ling. Both the New and Old Books of Tang have been passed down. Mr. Gua Gua, Mr. Yin and Yang, Mr. Shushu, etc. all take the two as ancestors, saying that the two people are good at knowing the aftermath, back to back to you, I infer the future generations of the world, written into the book "Pushing back the map", the prosperity and decline of the country' fortunes, the rise and fall of the lord, all extremely tested. Some people even use this to judge the world, which has become superstition. And the folk proverb has "Yuan Tiangang, Li Chunfeng, not as good as the old woman's heel", which means that although the two people are good at astronomy, the eye of the broken sky is not as accurate as the old woman's heel (in the old days, the woman wrapped her feet, the feet were damaged, the sky will change, the feet are itchy, it will turn sunny, and the itch will stop first, so it can be broken and sunny, which has its scientific basis), which has obviously contained doubts and irony.
Yuan Tiangang loves to read and is very knowledgeable. Later, he was recommended by his friend Zhang Kam to be a senior official in Luoyang. At this time, Yuan Kaigang's achievements in phase art were very deep and his fame was very large. For a time, the dignitaries and nobles of Luoyang came to find the calculation, including Du Yan, Wang Jue, and Wei Ting. Yuan Tiangang predicted that Du Yan would be an official; Wang Jue would be the official to Wupin; and Wei Ting would be made a military attaché. But all three will be beviled and predicted that they will meet again in the future. Sure enough, Du Yan was then appointed as a servant and a scholar of Tiance, Wang Jue was appointed as the prince of Wupin Zhongyun, and Wei Ting was appointed as a military attaché Zuo Wei. Later, in the battle between the crown prince and the king of Qin for the crown prince, the three were implicated and demoted to Junzhou together. There, the three of them met with Yuan Tiangang again, and Yuan Tiangang said to them: "Waiting for the public is ultimately expensive", and finally they all have to be official to Sanpin. The facts that followed were also what they expected.