It's purely to remember the four fronts of EXO back then.
Confession to Teacher Wen Rui'an's original work [I apologize if I feel it has been blasphemous to the original work].
The main color is Niu Can Reindeer, and the secondary color is Bai Xingmian. (The remaining four mean that we are just here for friendly guest appearances.)
Cold-blooded: Sehun
Ruthless: Lu Han
Chasing Life: Chanyeol
Iron Hand: Yifan
Little Zhuge: Jin Junmian (Prince)
Miracle Doctor: Zhang Yixing
Emperor: Kim Jong-in
The four great boys: Kim Jian - (first) Byun Baekhyun; (second) Do Kyungsoo
Silver Sword——Kim Minseok
Bronze Sword——Jin Zhongda
Iron Sword——Huang Zitao
Intention: