Who Rules the World 且试天下 (lit.) stars Yang Yang as Feng Lanxi and Zhao Lusi as Feng Xiyun. They’re both described as ambitious and extremely intelligent people who also happen to be the crown prince/princess of their respective kingdoms. They entered jianghu at a young age, and are known by their similar-sounding pseudonyms Hei Fengxi and Bai Fengxi.

There’s no drama synopsis, but if the producers follow the novel, a big portion of the story will focus on the wars waged between the kingdoms and different factions within jianghu. Costars include Lai Yi, Liu Ruilin (I almost thought this was a Jiaxing production) and Xuan Lu.

Directed by Yin Tao (Love and Redemption), the drama began filming a month ago.