Hua Yu Tong Mou

At a bar, Dong Ling, who is about to graduate from the police academy, meets Bai Ruowei, a cute and innocent-looking rich girl. These two unrelated women turn out to be inextricably linked to an old, unsolved case. Meanwhile, the playboy Zhao Zhi, who dislikes his fiancée Bai Ruowei, becomes more interested in her when he discovers that she might not be not as dumb as he thought... (Souce: Bilibili, translated)