There are many times in the play, such as "water figurines" and "bogeymen" with witchcraft color, etc. These are all fictional things, and they certainly don't exist in real life. The fact that bogeymen in TV dramas don't exist doesn't mean that all bogeymen don't exist.
There are no magical bugs like those in TV series, but ordinary bugs may still exist. Although the word "bugs" in Baidu Encyclopedia still gives a definition of "legendary", there are still real ancient books recording the methods of raising bugs and the records of bugs, so the existence of bugs has a certain historical basis.
For example, there is a record about the poisonous insects in the Spring and Autumn Zuozhuan more than two thousand years ago. The general idea is that all kinds of poisonous insects are concentrated in the same vessel and allowed to attack and swallow each other. The last one who survives is the method, that is, the king of poisonous insects. However, the production and use of the method insect has always been a secret biography, so few people know it, which leads many people to question the authenticity of the method insect.