Song Xi never expected to encounter Ji Sifan here. Originally wearing sunglasses to prevent herself from being recognized by fans, she instantly took them off when she saw Ji Sifan. With an expression of disbelief, she called out in surprise, "Ji Sifan?"
Because of Song Qiao, she did know Ji Sifan.
Back then, her relationship with her sister wasn't great. To understand the saying "know yourself and your enemy, and you will never be defeated," she investigated everything about Song Qiao when she entered the Song Family.
At that time, she knew her sister had a very close 'childhood friend.'
The reason for calling him a childhood friend wasn't well-founded, perhaps because Ji Sifan and Song Qiao grew up together.
After resolving all past grievances with Song Qiao, the two of them became best sisters, and during that time, Song Qiao introduced Ji Sifan to her.
Thus, Song Xi was somewhat familiar with Ji Sifan.
