The summary is:
This is a transcript of the first episode of a Chinese drama called When We Were Young 2018. It tells the story of Yang Xi, a girl who loves running and dreams of going to a good middle school. She gets injured in a lab explosion caused by a new student, Hua Biao, who also steals her bike and becomes her classmate. Yang Xi struggles with her leg injury, her family problems, and her feelings for Hua Biao, who seems to have a mysterious past. The episode ends with a voice-over that says their story resumes because of him.
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