大小单双倍投方案简介：There are only nine members of the Wanli Tutors, and there are only two ways to join. One is to wait for someone among them to fall, and the other is to challenge one of them, kick him out of the Wanli Tutors, and join himself.
There are only nine members of the Wanli Tutors, and there are only two ways to join. One is to wait for someone among them to fall, and the other is to challenge one of them, kick him out of the Wanli Tutors, and join himself.
