朱正廷 (Theo Zhu), born on April 21, 1996, in Anshan, Liaoning, China, is a prominent figure in the Chinese music industry, widely recognized for his versatile musical talent and charming stage presence. He first soared to fame in 2018 as a contestant on "Idol Producer," a Chinese reality boy group survival show, where he finished in third place, earning him a spot in the project boy group Nine Percent. The group enjoyed immense popularity during its active period, but following its disbandment, Zhu embarked on a successful solo career, further solidifying his position in the music scene.

Zhu's musical style is eclectic, embracing both contemporary pop and traditional Chinese elements, showcasing his desire to explore and innovate within his music. His discography includes hits such as "我的城（《烈焰》影视剧插曲）," a compelling ballad that showcases his vocal prowess, and "时光深处(《博物馆之城》主题曲)," which underscores his ability to convey deep emotions. With a mix of singles like "瘴," "T," and "Empty Space," Zhu demonstrates his versatility across different genres, appealing to a broad audience. The release of "Chapter Z" marks a significant milestone in his career, encapsulating his growth as an artist and his ongoing journey in the music industry. Through his music, Zhu shares personal stories and emotions, resonating with fans across the globe and establishing himself as a significant and influential artist in the Chinese music landscape.