The feng shui in the Forbidden City is so good, why did the country perish?

The reason why dynasties change is that each dynasty has long had one cycle after another because of human cause and effect, and these dynasties change from person to person, which is beyond Feng Shui's control. Just as a person's appearance does not represent the good and evil of people's hearts, he chooses land with good feng shui but does not do good deeds. No matter how unjust he does, the land with good feng shui cannot protect future generations. Heaven is good.