The word comes from their cooperation in the TV series "The Untamed", in which Sean plays Wei Wuxian and Ai Bo plays Lan Forgot the Machine. The interaction and emotional lines between them are deeply loved by the audience, and they are dubbed by fans as "taking mountains as king". "Taking the mountain as king" is not only the name of fans, but also the official recognition. This word represents a special position and deep feelings in the hearts of fans.