Tin seizes this chance to get Kei's evil exposed in public when he starts actions. Seeing his plot exposed, Kei holds Kau in hostage to force Tin to open the ‘Cave with Four Dragons Converging'. Tin gives in for the sake of Kau's safety. After entering the cave, Kei delivers fatal attack on Tin. Caught unprepared, Tin is finally killed by Kei. Kei is wounded and escapes from the cave. Anticipating Kei's intention to take revenge, Tin left a letter to Kau before his death. In the letter, Tin urges Kau to put aside brotherly love, deal with Kei and prevent Kei from working use of the 'Cave with Four Dragons Converging' to do evil. Due to brotherly love, Kau exhorts Kei to repent, but Kei does not listen to him. In a fit of angry, Kau declares to cut off their ties as brothers and fixes...