Niu Sengru
By 824, Niu Sengru was a chancellor, and he wanted to see Yang also promoted, but as Yang did not want to exceed, in his post, his father Yang Yuling, who was then the defender of the eastern capital Luoyang and who had never been chancellor, Yang was not made chancellor but was made acting minister of rites (禮部侍郎, "Libu Shilang") and put in charge of the imperial examinations. In 825, by which time Emperor Muzong's son Emperor Jingzong, Yang, in that capacity, selected the examinees for passage, and it was said that many of them later became prominent officials.