Yuan Tiangang once predicted that sows would die in trees, which made Li Shimin very happy. How did this prediction come true later?

Later, the Tang Dynasty was destroyed by Zhu Wen, and this prediction was verified. At that time, Yuan Tiangang said that the Tang Dynasty would perish only if pigs climbed the tree. I don't know if he really predicted with his heart, or did he come up with such a sentence to make Li Shimin happy in order to prevaricate Li Shimin?

Those of us who have studied history know that the rule of chastity practiced by Emperor Taizong and Li Shimin during their reign made the Tang Dynasty very powerful. At that time, there was a saying that the Tang Dynasty was prosperous. Under the rule of Li Shimin, the Tang Dynasty became the economic center of the world, and it was very prosperous at that time. Under such a prosperous time created by himself, Li Shimin in his later years could not help worrying that the Tang Dynasty would decline or even perish.

In order to understand the development of the dynasty he established, Li Shimin called the famous Feng Shui master Yuan Tiangang to the palace to ask. I can imagine Yuan Tiangang's surprise when he heard Li Shimin ask him if and when the Tang Dynasty would perish. So when Yuan Tiangang said this, the sow climbed the tree, and the Tang Dynasty perished. Is it to make Li Shimin happy, or did he really predict that Zhu Wen would destroy the Tang Dynasty and become the emperor? We don't know.

At that time, Li Shimin was very happy after hearing this sentence. He thinks that according to his understanding, sows will never climb trees in their lives, which indicates that the Tang Dynasty will not perish and will always exist. However, real history is cruel. In such a prosperous Tang Dynasty, few generations were troubled by the Anshi Rebellion. After that, the Tang Dynasty began to decline and finally lost to Zhu Wen.