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His father Cui Yingfu (崔嬰甫) served as the magistrate of Lujiang County (廬江, in modern Chaohu, Anhui) and was a younger brother to the official Cui Youfu, who would eventually serve as a chancellor during the early years of the reign of Emperor Daizong's son Emperor Dezong.
He must have been born, however, in or before 805, as in 805, the same year when Emperor Xianzong's grandfather Emperor Dezong died and was succeeded by Emperor Xianzong's father Emperor Shunzong, he was created the Prince of Wen'an.
Early in the Zhenyuan era (785-805) of Emperor Daizong's son Emperor Dezong, Quan served on the staff of Li Jian (李兼) the governor (觀察使, Guanchashi) of Jiangxi Circuit (江西, headquartered in modern Nanchang, Jiangxi).
It was a released as a silent film Romance of the Western Chamber (1927 film) in China in 1927, directed by Li Minwei and Yao Hou, and in 2005, the TVB series Lost in the Chamber of Love made a twist in the tale and had Hong Niang, played by Myolie Wu, falling in love with Zhang Sheng, played by Ron Ng, while Cui Yingying, played by Michelle Ye, would marry Emperor Dezong of Tang, played by Kenneth Ma.