Li Heng's contribution was to force another person named Chen Gui to change the world.,It was precisely because of the invention of firearms that countless Westerners knelt before the ancestors of China, perfecting and developing the gun. This led to the death toll in any small-scale war in modern times far exceeding the casualties of large-scale ancient wars.,Such a "beneficial to the country and the people" approach, if anyone still tries to obstruct it, shouldn't they be put to death。