Wang Xia's joke

Wang Xia is a middle school in Bijie. She lives in the mountains. She lives far from school. She goes to school on foot. It took her half an hour to get to school. She loves her school and her teachers. She gets along well with her classmates. She is outgoing and hardworking. She is good at her lessons. She often helps her classmates with their homework. She likes playing table tennis, and she also likes singing.

I want to know what the hint is. That's about all I wrote.