It's a new boss at level 42, and he's trying to trap them. He pulls his aggro, which is like a snake's tail, and transfers it to a kid who's closest to him. This way, they don't even have to fight the boss, because they're just like little wu and little jiang. Oh, and the boss doesn't attack the kid first, because the kid is running away. This means that the boss isn't attacking the kid directly, but instead, the boss is trying to bait the kid into attacking. So, the kid has to run away and dodge the boss before he can attack him. The kid has no idea what to do, so he just runs away.