开单买单开双买双技巧

简介：He looks about forty years old and is wearing military uniform. He has a square face, a wide forehead, a thick black beard, a pair of piercing eyes, and two arms that are thick and slightly longer than ordinary people. At a glance, you can tell that he is a person who is accustomed to using heavy weapons. Shi clasped his hands into fists and lowered his head slightly, waiting for the prince's next instruction.