Happy anniversary 2 Who is the murderer?

The little murderer in this film is Huang Mao himself.

In the movie Happy Death Day 2, in order to get rid of the curse of repeated birthdays, Brother Huang Mao decided to find Jason on his birthday, intending to find out the secret of his murder, but unexpectedly found Jason repeating his birthday, even being targeted by people like himself. In order to protect Jason, Brother Huang decided to sacrifice himself and was stabbed to death by a mysterious man to keep Jason alive.

Happy Death Day 2 is a horror film directed by Christopher B. Langdon and starring Ruben Authour and Jessica Collins. Published on 20 18. This film tells the story of a college student who is going to solve the mystery of her late friend's death.