[IQ online, no brainless plot] [No System] [Gou Dao Liu] [Chang Sheng Liu] [No Heroine] [Old Six] [Machinery] Zhang Wu traveled through the world of practice and became a prison guard at the beginning. This world is very dangerous. When The end of the official is the sky prison, the end of the army is the shroud of horse leather, and the end of the rivers and lakes is the end of vendettas. They all have a bad death. Inventing and creating, doing business to get rich, secret recipes for wine making, and secret recipes for salt production... are the ways to die. The county magistrate, the governor who exterminated the family, the boss will make good arrangements for you. If you want to survive, you can only live in peace, stay in the prison, make money, and repair.