单双出现的概率是多少

简介：The sun set, twilight came quietly, and before you knew it, it became dark. Deep in the Lingshan Mountain, in an independent small courtyard, a bald monk had just eaten and drank. He picked up his clothes and was about to take a bath and change. But just as he walked to the bathroom door, he suddenly felt a pain in the back of his head, his whole soul was shaken, and then he passed out.