Ming Dynasty time travel, technology crushing (flintlock gun), destiny rewritten
The equation in the smoke - the small flag at the border on the eve of the modern military expert's soul passing through the earthen fortress, the formula for purifying saltpeter in the left hand, and the fragment of "Zheng He's Navigation Chart" in the right hand. Yunze used chemical equations to deconstruct the laws of war in the cold weapon era, and used thunder and fire jars to rewrite the outcome of the Battle of Datong. However, when he improved the flintlock gun, he discovered that the star map six hundred years ago was actually marked with quantum physics symbols. A young assassin who is a descendant of Emperor Jianwen, a mysterious luminous powder, a Portuguese-speaking Ora cavalry... This technological game spanning time and space will eventually reveal the mystery of the aliens from Zheng He's fleet.
