裴度
As of 827, Emperor Wenzong was waging a general campaign against the rebel general Li Tongjie, who had seized Henghai Circuit (橫海, headquartered in modern Cangzhou, Hebei) after the death of his father Li Quanlüe (李全略), who served as military governor. Emperor Wenzong ordered the nearby circuits to contribute soldiers to the campaign, but Shi Xiancheng the military governor of Weibo Circuit (魏博, headquartered in modern Handan, Hebei), one of whose children was married to a child of Li Quanlüe's, was secretly aiding Li Tongjie with food supplies. Pei Du, who was by then again chancellor, was unaware of this and believed Shi to be faithful, but on one occasion when Shi sent a messenger to Chang'an, Wei stated to the messenger: