According to insiders, he's caught a bad cold. He tried to continue on with his filming, but had to stop because he was in so much pain. He went to the hospital and got a shot, but his situation has not improved and he is suffering from high fever, has lost his voice, and does not have strength even to walk.

SEE ALSO: Super Junior's Ryeowook claps back at a malicious commenter claiming to be a fan