There are some colloquialisms here that need to be explained:
A papaya is a paw-paw.
“Kiasu” is slang for competitive. It’s often used in a derogatory sense, for parents and students who work very hard hoping to outdo everyone else. It could also mean students who refuse to share information with their peers because they don’t want them to be better than them.
Yeah, the last post was a satire on competitive Asian parents.