Usual Suspects

A murder case occurred in a small town. The thug Scar Man went to the gambler Chen Yuan's house to collect a debt. During the fight, Chen Yuan killed him. Was it a murder of passion or just self-defense? After investigating the relationship between the two, it was found that someone instructed the scarred man to come to Chen Yuan's house to collect debts. What hatred does this person have against Chen Yuan? Let us slowly unravel these mysteries together! !