The female protagonist who underwent book transmigration into a period novel. She occupies the body of a cannon fodder character who was swapped at birth with Song Yao and spent eighteen years suffering in the countryside. After being brought back to the city, she was forced to marry Zheng Xiujie, a disabled man. Her mother-in-law kidnapped her to pair her with the mentally disabled Wang Jinbao to produce an heir. The original host committed suicide by slamming her head against a wall. Ruan Zheng is resourceful, decisive, and fights back against her oppressors. She later binds with a Plane Management System that grants her Resurrection Armor, allowing her to temporarily revive for three days to complete a mission of becoming a supermarket operator in the 1960s.