What does the ancient dance black flag mean?

First of all, these flags are not only for decoration, but also play a great role in marching and fighting. Flags in the army can be divided into: No.1 Flag, Order Flag, Liaison Flag, General Flag, Array Flag and Tooth Flag. When all the troops charged, people rushed to the place where the flag was. Those who raise the flag are all Hercules, the flag is there, and the flag is dead. To mobilize large units with military symbols and small units, flags and tokens are also needed. The color of the flag represents the situation in front, and the rear army can respond accordingly according to the flag.