What do you mean by mutual harm between Mao and Chen?

It really means bad. It means that two people are at odds. In fact, you and your husband are at odds, but aren't they together? Don't pay too much attention to the zodiac, because it is not a question of the zodiac, but a question of the specific eight characters, and the specific eight characters should be accurately examined from the time of birth, not just the date, because in fact, the eight characters are not a superstition, but a scientific reasoning, and ignorant people will mistake them for ghosts.