The Invincible Mad Doctor in the City

Lin Yang, whose college aspirations were tampered with and was forced to become a veterinarian, thought he could only live in misery for the rest of his life. However, he unexpectedly received the inheritance of supreme medical knowledge and became proud of the city. With his magical medical skills, he can compete with the King of Hell for his life! A poison doctor can kill people invisible. I am Lin Yang. There is no patient in this world that I cannot save, and there is no patient that I cannot kill.