Western artillery and urban surgery，Almost introduced to China at the same time，The effect is a large diameter。Western artillery played a very important role in the Ming and Qing bet365 live casino games Dynasties，Comparison of comparison，Western urban surgery rarely obtained the actual application at the end of the Ming Dynasty，The impact of the battle situation is very small。Different from Europe，Western -style artillery is mainly a kind of guardian weapon in the Ming Army。Demand for transforming defense work，It mainly comes from enhancing the effectiveness of the city artillery，instead of resisting the shells。In the late Ming Dynasty, I tried to practice bet365 best casino games the city of Western France.，Still in an experimental starting stage。For example，15 years of Chongzhen (1642)，Ma Weicheng, who is a Xiong County Wang, was hired by the Director of the Governor，It is Sizhouzhou City、Yangzhou Mansion Castle Construction sharp horns。According to this trend，The Ming Dynasty may have more strategically transforming the city，The defense system of using the Western Cannon and Castle。But，The rapid defeat of the Ming Dynasty，Bet365 lotto review The possibility of promoting new types of defensive industries ended，Western Construction City Law also lost the opportunity to fully prove its effectiveness in actual combat。(Zheng Cheng Source: "Research on the History of Natural Science" 2011 Issue 2 Mo Bin/pick)