What is a neighbor? He is the person who comes to the door to borrow some when eating dumplings because his family is not jealous.
Yi Xiyun is Chen Xiaoxu's neighbor.
One night in the middle of the night, Chen Xiaoxu's door was knocked by Yi Yunxi.
Yi Yunxi asked: "Miss Chen, can you lend me some blood?"
So, the descendant of the vampire royal family and the god of death + the urban smart white-collar worker = a bloody story every day.