The Jealous Director Shi(2021)

Shaoshuai Meitian Dou Zai Chicu 2: Shaoshuai Shi Cu Jing

She is a forensic expert who died in vain and time-traveled back a hundred years ago, while he is an ambitious director of the Department of Military and Police. A shocking massacre rocked the city, leading to a twenty-year-old world-shaking mystery. Witness how she handles the vicious fights within the family, and how, together with the handsome director, they crack the puzzling crimes. Together, they are invincible!

(Source: Webnovel)