A timeless trope. A boy throws a paper plane or a rolled-up note (carrying a Mou Chow chocolate or a flower) over the wall. The narrative follows the suspense: Will the note land in the dust, be caught by the ayah (gatekeeper), or reach the hands of the beautiful girl in Class 11? These storylines often feature a "pen-pal" phase lasting months before the two ever speak. The climax is usually the annual school sports day, where outsiders are allowed limited entry.
However, I can offer general guidance if you’re looking for: A timeless trope
The nature of relationships for VNSC students has shifted dramatically with technology: be caught by the ayah (gatekeeper)