The function of the first Yuet Hua is similar to the human supplement of EVA, that is, to create the ultimate species by modifying human genes, and even to survive in a vacuum environment!
The second Yuet Hua is basically the same in function as the first one, but the use of some functions is restricted, which is why bat monsters are needed to make monsters, because the copied Yuet Hua can't change the genes of the dead through its own signals!
According to the truth, the first moon month is not an evil thing, and even to some extent, the first moon month can really achieve the purpose of re-evolving human beings! In fact, both Yuet Wah have their own self-awareness!
In fact, Baidu Encyclopedia has the secret to explain the dead space Yuehua!