On a late summer morning in June 2014, 12 female Chinese graduate students attended a workshop on conducting field interviews in rural Shaanxi province. The graduate students were selected from a top university for a research project on late birth registration and the “missing girls” in China. We told the students that the aim of the workshop was to train them in professional interviewing practices so they could survey rural families and learn about the process and challenges involved in late birth registration, that is, families registering their older children for the first time. While the national law states that births must be registered within the first month, some families wait for many months, sometimes even years, before registration, and this can influence local and national birth statistics as well as the reported sex ratio at birth (SRB). After the initial introduction to the research topic and workshop schedule, we asked the students if they had any questions. One young woman sitting in the back of the class asked: “how are we going to find these families and unregistered children?” We looked around the room and asked if anybody in this group had an immediate family member who was not registered at birth. Four students, who were from the countryside, raised their hands and admitted that their younger siblings had not been registered until they were four or five years old. We then asked if they knew anyone from their extended families who had been involved in a late birth registration, and two more students raised their hands. This answered the young woman’s question neatly and concretely. Interestingly, the following day, one of the students said she had called her mother to tell her her classmates’ fascinating stories regarding unregistered children, and her mother admitted to her that she, too, had remained unregistered until the age of two....