Traveling through the 60s, an interstellar woman makes a fortune by selling men

Introduction: (Travel + space + no CP) Wei Wei, an interstellar mecha designer and mecha warrior, encountered an enemy attack and had no choice but to activate the untested mecha he designed around him to jump through space. With this jump, I didn't expect to travel from the interstellar era to the 60s in China. When he opened his eyes, he was in the body of a five-year-old girl named Wei Wei. It seems like time travel, but what's weird about it? We encountered a major crisis at the beginning, but now in this little body is Wei Wei from the interstellar world, who is looking for death... (PS: Because the main plot takes a long time, from 1960 to the reform and opening up, the age setting of the heroine is biased. Small)