There is a joke that he can do everything from laying bricks to repairing aircraft carriers.

Professional maintenance of nuclear submarines, recycling of second-hand aircraft carriers and second-hand space shuttles, overhaul of nuclear reactors, disassembly and cleaning of missile engines, replacement of engine oil, change of manual gear of unmanned reconnaissance aircraft to automatic gear, replacement of three filters for space shuttle maintenance, annual inspection of flying saucers in outer space, installation of welcome pedals of various missiles, dust removal and waxing polishing of the surface of satellites working high above the ground, wholesale of J- 10, F22, F35, B2 bombers, hydrogen bombs, atomic bombs, neutron bombs and Dongfeng Full. Large quantity favorably, 30% off for group purchase and 50% off for spike. According to the national three guarantees, it can be returned within 7 days, 15 days, and the warranty is one year. There is a formal invoice! Reputation first

Choose me as the correct answer.