Why did the ancients think that comets were a sign of disaster rather than a good omen?

1, we don't need to find a reason for the good weather (it simply boils down to a wise monarch and a wise minister), but we only need to find a scapegoat for the ominous natural disasters. It is better to let an unpredictable comet take the blame than to regard it as auspicious.

2. In many cases, Chen Wei is not trying to solve the disaster itself, but to achieve the political purpose behind it (warning the king and bringing down a political enemy), so his disaster effect is far greater than good luck.

3. Compared with Ganoderma lucidum and Kirin, or auspicious phenomena such as white red crowns, the astronomical phenomena of comets can be observed by all people in the world for several days, which is not conducive to the contribution of a discoverer and cannot create political capital.