What is the identity of beauty scholar Yu Lexuan?

In the TV series "Scholar", Yu Lexuan's identity is a playboy with a strong business mind. He happened to bump into Xue Wenxi taking a bath and discovered Xue Wenxi's real gender. Deeply moved by the birthday party arranged by her, she became a "brother" who silently guarded Xue Wenxi.

The Scholar is an inspirational school drama in ancient costume, directed by kiku, Song, Richards, Nicole and Zhang Xin, and co-starred by Wang Jinsong, Zhang Shuangli, Gong Beie, Zhang Hao Wei, Yu Bo, Wang Ce, Yang Zihua and Wang Haojun. The play is adapted from the novel Days of Confucian Scholars in Sungkyunkwan Hall, which tells the story of Xue Wenxi, a poor family, who entered a cloud school where only men can study by mistake. She and Feng, Yu Lexuan, Lei Zexin and many other students overcame difficulties and grew up together, and wrote a romantic story of a group of ambitious young people who were wanton and youthful.