Twin of Brothers is a 2004 TVB TV-series set in ancient China, based on the wuxia novel of the same title written by Huang Yi.
Evil sects have always had an evil king in every generation to lead them. There was one such evil king by the name of Sek Chi Hin. He learned an evil martial art, but since he possessed a kind nature and didnt want this evil power to harm mankind in the possible future, he asked his two friends to help him freeze himself along with the "Che Dai Se Lae Chi" in the Evil King Tomb. The "Che Dai Se Lae Chi" stored all the past evil king's power, and was one of the most invincible power sources in the world. However, the Che Dai Se Lau Chi was very tricky, and transferred a part of itself into one of Chi Hin's friend's piece of clothing before he left the tomb. (This friend is Fu Guan Chek's master) This piece of clothing turned out to be the "Immortal Routine", and along with teaching its reader amazing power, it was also the key to opening the evil king's tomb.