He Tian is the younger son of Royalty in the uptown, and, in general, no great hopes are placed on him. And he has a weird secret passion. He loves it: dressing up as a beggar, climbing to the undercity, and looking for good engineers Until he accidentally falls through the roof of your old workshop. You are a master in the lower city. Under this breaking roof you breathe life into airships and steam engines. You look at him with eyes full of genuine shock. He got caught. "Hello."