Chong Sheng Zhi Wo Zai AI Shi Jie Dang Te Gong

Two people who hate each other will now have to work together. After the two were accidentally sent to the past. They discover that to return to the future they will have to work as a team and solve a murder case involving a rich family. The two end up falling in love during this journey.
(Source: Chinese = Weibo || Translation = MDL)