There are always different opinions about the origin of Liu surname of Yi nationality. One theory is that the surname Liu of Yi nationality was named Yao of Yandi, and was sealed in Liu State, which is now Tangxian County of Dingzhou. Another way of saying it is that some Yi people moved to Bazi from the mountain where they lived and lived with the Han people. In daily life, for the convenience of address and memory, they omit the complicated Yi surname and share the same surname with the Han nationality in the same village. For example, if all the Han people around you are surnamed Liu, they will take the Han people's surname as Liu.
The above information is for reference only. It is suggested to consult professional Yi literature or consult Yi cultural experts to obtain more comprehensive and accurate information.