C422 Of course they were familiar …

"Sister A Ying, you're familiar, of course you're familiar with each other," Zhang Shaoyang said. "When I was young, Sister A Ying and my elder sister would often take me out to play, and I would often follow behind them ? Sigh... In fact, Sister A Ying is pretty good, she's an only child. She doesn't have a brother, but she treats me well