李勉
Indeed, by spring 782, Liu was initially making progress in capturing Pu Prefecture and took its outer city, so much so that Li Na got onto the city walls and tearfully begged Liu to allow him to surrender. With Li Mian the military governor of Yongping Circuit also persuading him to surrender, he had his subordinate Fang Shuo (房說) escort his brother Li Jing (李經) and son Li Chengwu (李成務) to Chang'an to submit. However, the eunuch Song Fengchao (宋鳳朝), arguing that Li Na was about to fall anyway, suggested to Emperor Dezong not to accept the surrender; Emperor Dezong therefore detained Fang, Li Jing, and Li Chengwu, and made no responses. Li Na thereafter withdrew out of Pu Prefecture and returned to Yun Prefecture, continuing to ally with Tian against the imperial government. Meanwhile, though, his De (德州, in modern Dezhou, Shandong) and Di (棣州, in modern Binzhou, Shandong) Prefectures submitted to imperial authority, but were subsequently seized by Zhu Tao the military governor of Lulong Circuit (盧龍, headquartered in modern Beijing), who was then considering rebelling against the imperial government (over his dissatisfaction that Emperor Dezong did not give him any part of Chengde's territory despite his contributions in Li Weiyue's destruction) but had not yet openly done so. Meanwhile, Emperor Dezong had also commissioned Li Xilie to be the military governor of Pinglu and ordered him to attack Li Na, but Li Xilie, who was then already in secret alliance negotiations with Li Na, took no actual actions against Li Na.