I Still Remember Little Prankster

Yue Lanxi had always been her good friend. Lang Yan had always been her boyfriend. Yue Lanxi was the good friend who was always saying, "Xiao Li, Xiao Li, you have to be happy." Lang Yan was the boyfriend who always held her little hand as they crossed the street. When exactly had her good friend and boyfriend become a couple? Yu Li hadn't the faintest idea. "I Still Remember Little Mischief" Theme: