1. First, players of 10 are divided into group A and group B by drawing lots. If there are seeded players, the top two or four players should be separated.
2. The two groups decide that the top two groups are the top four through cyclic integral;
The top 3 and 4 places are as follows: Group A is the first pair of Group B, Group A is the second pair of Group B, and two champions compete for the championship; If the third place must be decided, the two losers will compete for the third place.