MyLittleBrother
For the tournament to end this badly really can mean only one of two things: the leader is incompetent to the point where he does not know the strength of the demon he himself captured, or he is corrupt and meant to kill the next rising set of sealers within his clan. Also it'll be really dumb if Yuan either manages to kill or eat the demon; they're so many power levels above Yuan that the novel hasn't even given us the names, and earlier Yuan got sick from eating a Demon Warrior core which is multiple levels below Emperor.