Zhang Jiuling
By 736, An Lushan carried a general title and was serving under Zhang Shougui as an officer of the Pinglu Army (平盧軍, based in modern Chaoyang). In 736, after An disobeyed Zhang's orders and made an overly aggressive attack against the Khitan and the Xi, he was defeated. According to army regulations, he was supposed to be executed. Zhang then sent him to the capital, Chang'an; by not executing An himself, Zhang was hoping that Emperor Xuanzong would pardon An. The chancellor Zhang Jiuling, arguing that An's death would be necessary to preserve military discipline and further believing that An had the appearance of a rebel, advocated An's death, but Emperor Xuanzong believed An to be able and did not want to execute him, and therefore spared him but stripped him of titles, returning him to serve under Zhang.