I'd say this is a one-of-the-kind Chinese yuri story. The only one I've ever seen that's not just copying the Japanese models, and many high school life facts are just too real to chinese readers. I mean all the lovely details and memes on homework, A/Cs, sleeping in class, cafeteria, deliveries through fences……

It seems like you haven't come across 如你所见这是百合漫/This is Obviously a Yuri Manhua.