The teacher comes to talk to the students and tells them that they've been bullying the lower grades and skipping class. He wants to see their parents, so he wants to know what they're up to. The teacher doesn't report anyone to the authorities, so the students blame each other. They've never met each other before, so why not become friends? It's cool to be friends, says xia, because it means that you can be alone and not be bullied. .