It is said that Yuan Tiangang calculated that Emperor Taizong and Li Shimin would make Li Ke a prince. Why?

That's because Yuan Tiangang thinks that Li Ke is the most suitable candidate for the prince, so she recommends Li Ke as the prince. Although throughout the ages, this master of metaphysics and geomantic omen has many magic sticks used to deceive people and seek wealth, Yuan Tiangang is different. He seems to be blessed by heaven and is very good at inferring numerology. Moreover, because this divination entered the eyes of Li Shimin, he was invited to the palace to eat and drink, making him a brain trust of Li Shimin.

Then, when Li Shimin was at a loss to establish a prince, he appealed to Yuan Tiangang, hoping that he would use divination to show Li Shimin who was the right person. Then according to Yuan Tiangang's repeated divination, Li Ke and Li Zhi are both lucky and lucky, and both of them have the appearance of turning dragons into dragons, so it is difficult to compete from divination alone. However, Yuan Tiangang, comparing their origins, thinks that Li Ke's background is more noble, while his mother is a descendant of Emperor Yangdi, and her personality is more decisive, more like a leader who can make this country and the next level, so she suggested that Li Shimin make Li Ke a prince.

However, Li Shimin didn't listen to Yuan Tiangang's opinion, because Li Shimin's throne was originally shot down in a bloody rain. He knows how difficult this step is, and he is afraid that his sons will make the same mistake. He appreciates Li Ke, and he knows that Li Ke is a material that can be made, but Li Ke is too much like him, which makes him afraid. Besides being excellent, he is cold and decisive ... so he even suspects that Li Ke bribed Yuan Tiangang and used these.

When the Tang Dynasty gradually declined, I wonder if Li Shimin regretted not listening to Yuan Tiangang's advice.