I Once Lived Through the Jingnan Campaign

He transmigrates to the Ming dynasty, but he can't do anything! And nobody even gave him a heads-up that he was going to transmigrate. Xu Ping'an is speechless. Gunpowder? Can't make it. Soap? Can't make it. Train troops? Can't do it. So what can you do? Visit brothels. Woo princesses. Fight the barbarians. See how an ordinary man survives in the Ming dynasty. A long-life story, no harem, no System.