After Using Technological Waste to Become an Immortal, Mr. Gu Begged on His Knees

A master of weapon refining in the world of immortality transformed into a transparent marriage tool. He originally wanted to secretly make weapons using leftover materials from her husband's laboratory to make a fortune, but she accidentally made the top secret of the country. Her husband, a science geek who regarded her as an "air companion", fell into contemplation on his understanding of the world.