During her college years, Li Yiyi, who was introverted and introverted, had a misunderstanding with her roommate Han Lu over money. They were attacked and insulted by Han Lu, which led to Li Yiyi taking revenge on Han Lu. Han Lu sketched from life in the mountainsLi Yiyi wanted to push Han Lu off the cliff, but in the fight, Li Yiyi stepped on her foot and fell off the cliff. From then on, Li Yiyi disappeared