Military industry expert Chen Qiming traveled back in time to 1896. When he opened his eyes, he saw a knife held to his neck.
"Where are the braids?"
He cut off the iron knife with a piece of sapphire blade, cut off his own hair and braided it into a fake braid. Then he told the man holding the knife—a regimental leader named Zhao Huairen—"I'll teach you how to make something. Something worth a hundred times more than your knife."
Start with a can of modified gunpowder and fifty steps of gravel. Starting from a piece of soap, it spread to three provinces. Starting from an electric lamp, lighting up southern Sichuan. Starting with a breech-loading gun, Zhao Huairen touched the braid on the back of his head and walked into the blacksmith shop.
Weng Tonghe opened a copy of "Soap Made with Local Methods" at the military aircraft. The last page is full of names, and the bottom line is: "The copy is completed by Mr. Weng of Changshu. Pass it on to the next person."
He picked up the pen and added a word next to it - "pass".