三期必出一期

简介：There are three types of Folang machines: large, medium and small. They are made of copper or iron. Dayang Folang has a body length of 285 meters and a weight of 700 kilograms. It is called a general. It is said that a huge cannon weighing 3,000 kilograms was once cast, and its range is comparable to the Hongyi cannon.