“Lulin and Yanfei discovered they had been separated at birth. The two were put up for adoption as infants because of China’s one-child policy. The girls share a number of things in common: They were both married in 2007, their husbands have the same name (Bin), they share some of the same hobbies and favorite foods, and their sons could pass for twins. Here’s something that’s really uncanny — they each have a scar on their fingers resulting from similar accidents that happened when they were 6 years old.”