Does anyone know that there is a TV series about Hong Wen and Louis Koo, which is about Qianlong? What's its name?

It is a costume court martial arts drama, produced by TVB Radio, with 20 episodes in total. Louis Koo and Ewenki cooperated hand in hand for the first time. The story tells a little-known historical secret around the process of four emperors Li Hong's accession to the throne. The hero Li Hong is played by Louis Koo, and the heroine Cha Xiaoyu is played by Ewenki.