Do Ya Ya and Pearl Krabs know each other?

Yaya is a pair of twins, whose real names are Xue and Xue Zhiyan, from Fuqing, Fujian. According to the inquiry data, Ya Ya and Zhen Zhen don't know each other, and there is no connection between them, so they don't know each other. China singer Zhen Zhen published her work Physical Effect.