How many numbers does Yaya have?

Yaya has three numbers. Yaya, twins, whose real names are Xue and Xue Zhiyan, are from Fuqing, Fujian. The two sisters are usually timid and do not like to talk. Mom and dad came up with a strange way to make a video, but it didn't become an instant hit. More than 800 videos have accompanied netizens for more than two years. While getting everyone's blessing, the two children also sent happiness and comfort to countless lonely netizens, which became an indispensable spiritual food in many people's lives. Even grandma Lu praised their skill.