There are three ways to play: Fuzhou, Xiamen and Zhangzhou. Second-year mathematics: the first way: the second-year mathematics algorithm adopts Gaussian algorithm, which is the sum of head and tail. It is also fun to add the head and tail to 100 and multiply it by the final number. There is a second way to play 2, 3d, which can use the fast Austrian method, but the fast Austrian method is more complicated, and most of them are calculated by the X equation, which is more difficult.