Xia Libing of course remembered the chubby little girl from the video. The first time she went to Xiang Kun's House for dinner, when Xiang Kun went to the next-door neighbor's to "borrow rice," she saw that little girl standing at the door of the next-door 706, "welcoming" Xiang Kun.
She didn't find it strange that Xiang Kun was teaching the little girl to flip the coin, but as she watched the video, she noticed that the little girl's coin-flipping technique seemed unique.
Clearly, her method was different from adults', better suited to the size of the little girl's fingers. If adults were to flip the coin in this way, it would be considerably more challenging.
So in her view, if Xiang Kun taught the little girl to flip the coin, the technique shouldn't be like this.
The way it looked, it seemed more like the little girl had figured it out on her own, which also explained why she was so adept.