Pei Du
In 813, during the reign of Emperor Xianzong, Shu passed the imperial examinations and was made the sheriff of Hu County (鄠縣, in modern Xi'an, Shaanxi); he was to be talented and to have gained a good reputation. When the former chancellor Pei Du served as the military governor of Shannan West Circuit (山南西道, headquartered in modern Hanzhong, Shaanxi), he invited Shu to serve as his scribe, and it was said that the declarations that Shu drafted for him were written so well that Shu's reputation for good writing became well-known.