Serious version: People are often troubled by three philosophical questions. Who am I, I am a turner, fitter, welder, electrician, printer, auto mechanic, excavator mechanic, aircraft mechanic; civil engineer, hydroelectric engineer, first-class construction Engineers, bridge engineers, registered oil and gas engineers, certified public accountants, certified investment analysts, firearms masters, agricultural technicians, doctors, teachers..., in short, all-round technicians. Where did I come from, from the 21st century blasting expert, to the Southern Song Dynasty? Where do I want to go, no, it should be said where I want to let this broken ship go, first of all, I have to transform it inside and out, turn it into an aircraft carrier, and sail to the glorious shore. Entertainment Edition: A 21st century blasting expert who traveled to the late Southern Song Dynasty, where he ran amok and regarded the earth as a story of a little loli who was dressed up at will.