Captain of the Criminal Police Brigade of Biannan County Public Security Bureau.He has cracked numerous major cases, and everyone in Biannan County calls him Coach Lin with fear. Lin Chuan is calm, witty, athletic, and has an extremely stubborn personality. However, he lives a very rough and unkempt life on weekdays, and treats criminals harshly.He is not soft, and often rushes to the front line to take the lead. All criminals in Biannan County are frightened by this news.