d iron cavalry""Can you joke about this"Li Chen's tone was calm, but his eyes were filled with arrogance. "If he dares to come, I dare to stay. If we win this battle, it will save me at least ten year...rince of Qin was being overly ambitious.Everyone knows that saltpeter is used to make gunpowder.Formerly, gunpowder played a relatively minor role in warfare. Even during the technologically advanced...