Liu Fei. According to "White Castle" broadcast by Mango TV, Huan Wang is the elder sister of the male owner Wang Yangming, and Liu Fei has a child named Hami. "White Castle" is a career medical drama directed by Yang Wenjun, Shi Luan and Xie Lu, and starring Peng Guanying, Tu, Kas,, and so on. The play was broadcast on Hunan Satellite TV and Synchronous Mango TV on May 3, 2023. This paper mainly tells the story of four doctors with different personalities, Wang Yangming, Lu Qingqi, Zuwenda and Liu Fei, who are always optimistic and optimistic in their first aid work, smiling at life and insisting on taking doctors as their highest ideal.