Are Beibei and Nanxiang brother and sister?

Beibei is full and Nanxiang is brother and sister. According to the inquiry data, Beibei and Nanxiang are brother and sister, the IP territories are all in Jiangsu, and MCN is a magic fairy. In Beibei's first video, the words Nanxiang is my brother appeared. The introduction of Beibei's satiety is to record the growth of a cook whose brother is a white mouse.