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A senior industrial designer traveled to Nanming where the building was about to collapse. The wind and rain are swaying, and the country is changing frequently. With the science and technology of later generations, can the protagonist turn the tide and save the Han people's world? When the Tatar cavalry went south, they faced the rifles, cement bastions, and rear-loaded heavy artillery invented by the protagonist. History changes from the moment the protagonist travels through time! ---------------- The author has completed the 2.5 Million-word work "Engineers in the Late Ming Dynasty". Welcome to read it.

Industrial designer Li Zhi travels back to the late Ming Dynasty. No money? Get a shuttle loom and make a lot of money immediately. Not used to the poor hygiene in the late Ming Dynasty? Invent a soap toothpaste to make you look brand new tomorrow! Peasant uprising? In troubled times, human life is as cheap as a dog? Cement concrete bastion protects your life! The Qing Dynasty went south and people were in ruins? Who dares to say no in front of my rifle? Within range of my cannon! It's all my Han people's land.

Who said the sea is rough? I say you will win if you love to work hard! As a time traveler, Li Tu wants to create the great navigation era in the late Ming Dynasty. This is a story of a time traveler working hard in the late Ming Dynasty. This is a relatively cool story.