It's not that she looks much like the girl in the photo, just that she looks alike. Especially the photo of the back, Ji Rou almost thought it was her when she saw the back.

What is Xie Mei doing for posting this kind of photo?

Ji Rou thinks wildly, does Xie Meimei want to tell her that the girl in the photo is her own sister, or does she want to say that she is a child picked up by her parents, and the girl in the photo is the child born to her parents?