User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170420134829/@comment-30924344-20170420142025

I think Liu is a descendent of the ruling family of the Han Dynasty with the same name which is where the surname "Liu" is derived from; Hand Dynasty emperors and royal family members had the family name of Liu who made the family name common in China. Interestingly the Imperial Chancellor Cao Cao served under Emperor Xian of Han who's personal name was Liu Xie, so I'd find it very intriguing her family and Cao Cao's family were connected.