How did Yuan Tiangang answer Li Shimin when the Tang Dynasty perished?

Yuan Tiangang answered the question of when Li Shimin Datang perished. He only said one sentence, that is, the pig will perish if it goes up the tree. When Li Shimin heard this answer, Zhang Er was puzzled. He smiled and thought that Yuan Tiangang was talking nonsense. In Li Shimin's cognition, how can pigs climb trees? Isn't this nonsense? So Yuan Tiangang is saying that the Tang Dynasty will be passed down all the time. In fact, Yuan Tiangang has given the real answer from one side. Let's analyze this problem from three aspects.

Yuan Tiangang didn't dare to answer Li Shimin directly. You should know that Yuan Tiangang is a man of God, who only knows Yin and Yang, and can count all things in the world, but what is Li Shimin asking? The demise of the Tang Dynasty is a national fortune, and this is the secret. There is a saying that secrets must not be revealed. If you don't answer this question correctly, you may even be killed on the spot. Can't answer directly, but dare not answer, can only give a seemingly joke, even a little nonsense.

Yuan Tiangang has answered Li Shimin with the correct answer. Anyone familiar with history knows that the Tang Dynasty was finally destroyed by Zhu Wen. Doesn't this just prove that when the Tang Dynasty perished, it was time for pigs to climb trees? Your surname is Li. Of course, there are plums on the tree. But if a man named Zhu overthrew your tree and re-established the dynasty, wouldn't that be the so-called pig on the tree? So Yuan Tiangang has given the correct answer, but Li Shimin didn't understand it.

The answer given by Yuan Tiangang is that there is a saying in the rivers and lakes of Li Shimin that fortune tellers are blocked at both ends. A fortune teller who comes alone will not give you an accurate answer. Because he doesn't know whether what he said is accurate or not, he gives you an ambiguous answer for you to think and guess. Anyway, how to explain this answer depends on fortune telling, which is why people say that Yuan Tiangang is great, but in fact, he has made you think he is great.