'Beginning') is a Chinese time-travel whodunit series, starring Zhao Jinmai and Bai Jingting in the lead roles.

It tells the story of a college student Li Shiqing and a video game designer Xiao Heyun who are trapped in a time loop on a soon-to-explode bus.

[4][5] In September 2023, producer Hou Hongliang and writer Qidaojun announced an upcoming companion series titled Restart.

[9] During the loops, Li Shiqing and Xiao Heyun are detained and questioned by the police Deputy Captain Zhang Cheng.

By 23 January 2022, the series had surpassed 1.8 Billions views on Tencent Video,[10][11] trended on the Weibo search,[12] and earned Bai Jingting 1st rank in the "Character Index List" in drama category.