I'm a Gangster in the Yin and Yang World

Chen Yan, 22 years old, is an ordinary social animal. He was born pure yin and has "yin and yang eyes". He was forced to enter the yin and yang world because of a book "Miscellaneous Notes of the Yin Dynasty" left by his grandfather and an ancestral copper bell. He has a soft-spoken personality, loves to complain, is afraid of trouble, but always gets involved in strange things. He is good at using market wisdom to resolve evil spirits, and is funny and reliable at the same time.