The Archives, IHP, contains a series of prints of the legendary Chinese emperor Fuxi and the goddess Nüwa, who created humankind. On the backs there are descriptions likely written by Yih-fu Ruey (1899–1991), which suggests that they were used in his research on the flood myth of the Miao peoples and the legends of Fuxi and Nüwa. While conducting ethnography surveys in Southwest China in the 1930s, Prof. Ruey noticed a common motif circulating among the Miao peoples in western Hunan: a brother-sister couple who had survived the flood wed and became the ancestors of humankind. The two have thus been worshipped as the Nuo god and the Nuo goddess. From the perspective of linguistic similarities, Prof. Ruey explored the link between the brother-sister couple within the beliefs of the Miao peoples and Fuxi-Nuwa myths in China. Moreover, considering the similarities in the relationships between the characters and in the creation myths themselves, Prof. Ruey’s research suggests the flood myth of a brother-sister couple originates from Southwest China.