What happened on EXO's Chen???

The pictures of Kpop idol group EXO's member Chen was seen on 'Chinese Year-End Special Program'
hosted on 31st were posted on online communities, and the pictures are hot in the communities because of Chen's injured face.

Netizens who saw the pics reacted "Chen was wounded in the face???, really???", "somehow serious? what happened?",
"there's a rumor that Chen was injured on MBC '2014 GAYO DAEJAEJEON (Kpop Grand Competition)', i think this it",
"worry so much" etc.







 
▲Image Source: Online Community