As someone with mild face blindness, it's normal to be a little slow when you can't tell people's faces apart. When you're good-looking, you can get away with it! But if you can't remember the face of the boy you had a crush on as a kid, that's a serious problem. It's not just being a little slow anymore, it's downright stupid. That does a disservice to Shu Yan's stunningly beautiful face and its high beauty score.
For a fangirl like Shu Yan, meeting up with and winning over a fair-skinned, handsome, and somewhat tsundere young man by sheer chance could become the ultimate goal in life. But if, years later, he comes back to pursue her and she can't remember his face, the story will veer from a warm, sweet romance into a tragic, angsty love story, barreling down that one-way road without stopping. And the heroine will go from "sweet and silly" to "sweet, stupid, and clueless."
Fang Bingjian gazed at Shu Yan's clumsy retreating figure, his eyes and heart full of love. Turning to Shu Ge, he said, "Your sister really is adorable. She's got every kind of cute covered: silly-cute, clueless-cute, and stupid-cute."