Each has its advantages and disadvantages. One-on-one combat is almost Iron Man, but Iron Man is slow and has a large population. Speaking of knives, hammers and the like, the next step is to throw stones. Gong Bing will suffer; But the iron horse is very fast, and it is very powerful against shields and garbage generals. It is best to have a strong defensive commander whose blood is thicker than water in front of the dragon gun guards. In a word, mutual cooperation between arms is the most important.