个位定胆的方法

简介：Following the sound, I saw an old man hurriedly crossing the yard and coming to the back hall. The old man is almost seventy years old. His beard and hair are all white, but his face is rosy and full of vitality. He walks with a brisk pace. The first word he speaks is in the courtyard, and after he speaks the last word, he has already arrived in front of the hall.