Interstellar Developer

The vast universe is filled with countless stars. Human beings think that they are the only life in the universe and are complacent about the development of their technology. Little do they know that in the eyes of advanced civilizations, the people on earth are just a group of diaspora living in slums, and they don't bother to communicate with them at all. When the protagonist is desperate to buy a house, something claiming to be the "ball pen of the high-latitude world" falls from the sky, and an interstellar legend begins.