Tang Dynasty Double Sword

The unified black horse, the unified black clothing, the unified ghost mask, the unified iron-clad blunt-toed boots, the unified three-stone hard bow, and the unified thick-backed broadsword, this is a mysterious armed force that rose and grew in the late Sui and early Tang Dynasties. Because each of them carried two swords on their backs, the people called them the "Double-Sword Black Cavalry." In the long history, no one would have thought that they could cause such a big storm! It will affect so many people and for such a long time. But who knows how many hardships they have experienced? How many lives and deaths have you seen?