Who Rules the World (Chinese: 且试天下; pinyin: Qiě Shì Tiānxià), is a 2022 Chinese streaming television series starring Yang Yang and Zhao Lusi. It is based on the wuxia romance novel Let's Try The World by Qing Lengyue. It depicts the adventurous love story of Hei Fengxi and Bai Fengxi. The series started airing on Tencent Video and WeTV on April 18, 2022, and concluded its run of 40 episodes on May 17, 2022. It is also currently available worldwide on the online streaming platform Netflix.

Hei Feng Xi is chivalrous and elegant while Bai Feng Xi is majestic and unrestrained. Opposites attract as both are unrivaled in talent and intellect. Caught in the warfare and chaos of the martial arts and political worlds, the flowers of love begin to bloom amidst the blood that has been sacrificed within the last decade. Trying to keep their identities hidden, they constantly have to be three steps ahead when dealing with much political unrest, betrayal, infighting, and the ultimate battle for the imperial throne.

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