Naizaiko is actually Ms. Cai Ming, because Ms. Cai Ming participates in the virtual anchor VTB live broadcast on B station, nicknamed Nai Naiko Nanako, and interacts with netizens through a secondary image.

The appearance of Nai Nai Zi is a derivation of a recently popular Internet phrase, that is, the last word of the name overlap plus the word Zi. Pronounced a bit like the Japanese anime character name, and so called everyone think cute, called very friendly, so many people imitate along.