How does Li count the three generations of the Tang Dynasty?

It is said that it is calculated by observing the astronomical phenomena. During the Taizong period, Taibai Venus appeared many times during the day, and Li, a famous warlock in the Tang Dynasty, was good at observing the sky. From this calculation, after three generations of the Tang Dynasty, the heroine King Wu won the world.

After receiving this prophecy, Emperor Taizong immediately discussed with Li the countermeasures and planned to kill all the suspicious people named Wu. Li used the sign of destiny to advise Taizong to think twice and not to say good or bad luck by virtue of his authority. Li secretly told Emperor Taizong, "Since it is a destiny, there is no way to escape. If people kill indiscriminately, I am afraid that the usurper will not be removed, but will kill innocents.

Moreover, the usurper will be old in another 30 years, and when he is old, he will be kind and his descendants will not be hurt too much. If the usurper is killed today, he will be reincarnated, and 30 years later, he will be just blood. Then, I'm afraid the descendants of the emperor will really be cut off. Hearing this, Emperor Taizong was frightened into a cold sweat, but there was nothing he could do, so he had to listen to his advice and avoid a massacre.

When the Tang Dynasty was in power, Li put forward the conclusion that "after three generations of Tang Dynasty, Wu Shi won the world". Since it is a few days, it is impossible to violate it. This Li is not wise enough to say it. As a result, something happened to him, which also hurt innocent people and killed many people. As a result, Wu Zetian still could not stop the rule of the world. Therefore, this "three generations after the Tang Dynasty, Wu Shi won the world" is an ulterior secret!