"It's a good thing that she's thin, so you happen to fit her size too." This sentence, she could still accept.
But—"My sis is a lot taller than you." Surely it wouldn't have made a difference if he left that out!
It wouldn't even affect the message he was trying to express!
Shi Yao's cheeks puffed up in anger as she shot back furiously, "I admit that Sis Jiayi is really tall, but I'm not short either!"
Sis Jiayi was just exceptionally tall, okay? At a height of 1.75m, Sis Jiayi was taller than most men. That, paired with her disposition, formed such a striking image that you couldn't help wanting to kneel before her and call her queen...
In the face of Shi Yao's explanation, Lin Jiage looked at her slender figure from head to toe before silently starting the car engine.
Over here, I'd just like to set some expectations for the story ~~
Lin Jiage is intended to be a romantically awkward character. It's not that he's socially stupid (he has been shown to be rather meticulous to his surroundings on multiple occasions), he's just inexperienced when it comes to romance. He doesn't know what to do, or perhaps, he doesn't even know what the feelings he has are. Given his personality, he probably has never talked about love to anyone in his life before either.
This story isn't like FHMM, where both leads possess almost impeccable intelligence when it comes to love, knowing what to do and say at the right time. On the contrary, Shi Yao and Lin Jiage are just ordinary people who have nearly no experience with love, and they would inevitably fumble a lot here and there, just like how most of us can act in silly ways when we encounter love for the first time.
What I'd like to say is that we should just look over them like doting parents and give them the chance and time to grow and learn.