Why can't the Ming-xi sects dig Nuerhachi's ancestral grave and prevent Houjin from making a fortune?

Because he wanted to save the Ming Dynasty by digging ancestral graves, which is superstition, there is no necessary connection between the two, so digging ancestral graves does not affect the rise of the late Jin Dynasty. When Ming Xizong reached the summit, there was no place for him in the DPRK, and the power of state affairs was in the hands of Wei Zhongxian and Hakkas. Moreover, he himself doesn't care much about politics, but he is very interested in making wood and has a high talent. In addition, Ming Xizong indulged in eating, drinking and having fun, and was finally hollowed out, which led to illness.

Faced with the great threat of the late Jin Dynasty, the weak king couldn't think of any way to stop the invasion of the Jin Army. Not only that, after he ascended the throne, he also removed Xiong Yanbi, a general with outstanding anti-gold ability, which made the Ming Dynasty even more powerless to fight against the late Jin Dynasty, and the latter Jin also took the opportunity to capture many cities. Later, although Xiong Yanbi was enabled again, he was framed by the eunuch party not long after, and this time he paid the price of his life directly. Since his death, the situation in Liaodong area has become more and more precarious in the continuous attacks in the late Jin Dynasty.

At such a critical moment, the young Ming Xizong began to believe in Feng Shui theory. At that time, a minister in the DPRK told him that the reason why Houjin was so smooth was because their ancestral graves had good feng shui. Hearing this, Ming Xizong felt very reasonable, so he sent people to Jinling, where Nuerhachi's ancestral grave was located, and dug up the whole Jinling. However, this move did not stop the rise of the late Jin Dynasty, and the Ming Dynasty was eventually replaced by the Qing Dynasty established by the late Jin Dynasty.

In fact, the rapid rise of the late Jin Dynasty was due to its strength and the Ming Dynasty itself. We can imagine how corrupt the rule of Ming Dynasty was from what the monarch of Ming Xizong did. It is also whimsical for the monarch to dream of changing the destiny of the country by digging ancestral graves.