Can Alexander's Crusaders defeat Qin Shihuang? Is he an opponent of Qin Jun?

The six countries were basically defeated by Qin, which was very powerful. It is difficult for Europe to beat China in the battle of cold weapons, not to mention Qin, the overlord of that era. Millions of heroes in the ancient west. That's a joke or a myth. How many people were there in Europe then? Genghis Khan's expedition to the west was less than 200 thousand, and the whole western region was bloody, and Western Europe was also frightened. The Southern Song Dynasty, the weakest in the eyes of historians, fought against Mongolia for fifty years before it was settled. If it was the Qin Shihuang period, Daqin was invincible in the world, not to mention Alexander, but it was not enough for the four emperors of different periods in the West to put together.