Messenger of Yin and Yang

Zhang Dezhi, a calm and ordinary person, was accidentally cheated on by a fool. After he was helpless and brought home, a lot of bizarre things gradually happened around him. All the bad things came together to find him, but the little fool slowly recovered. It's normal, and it's getting more and more mysterious. Is he a human or a ghost?Is it right evil? ——————————————————————————— He once asked the little fool why he had to follow him in the first place, and why did he stick to him so much?The little fool hugged his neck and was about to fall asleep, muttering indistinctly, "Because my brother looks like a good person, he even bought me something to eat." "Just because I look like a good person? What if he is not a good person?" "No, my brother is a very good brother." "..." There is no special reason, just because you seem to be a good person, I will follow you!