In light of Emperor Dezong's refusal to let him succeed Li Zhengji, later in 781, Li Na attacked the imperially-controlled Xuanwu Circuit (宣武, headquartered in modern
Shangqiu,
Henan). While he was doing so, however, Li Wei (李洧), a cousin of Li Zhengji's, whom Li Zhengji had made the prefect of Xu Prefecture (徐州, in modern
Xuzhou,
Jiangsu), offered to submit to the imperial government, along with the prefects of Hai (海州, in modern
Lianyungang,
Jiangsu) and Yi (沂州, in modern
Linyi,
Shandong) Prefectures. In anger, Li Na attacked Xu Prefecture, joined by an army from Weibo, but was defeated by joint forces commanded by Liu Qia (劉洽); the military governor of Xuanwu Circuit; Qu Huan (曲環), a commander of the directly-imperially-controlled Shence Army (神策軍); Li Cheng (李澄), an officer of Yongping Circuit (永平, headquartered in modern Kaifeng); and Tang Chaochen (唐朝臣), an officer of
Shuofang Circuit (朔方, then headquartered in modern
Yinchuan,
Ningxia). Li Na was forced to withdraw from his siege against Xu Prefecture, and in the aftermaths, he briefly lost Hai Prefecture and
Mi Prefecture as well, but quickly recovered them. Li Na himself withdrew to Pu Prefecture (濮州, in modern
Heze,
Shandong), and Liu followed him there and put Pu Prefecture under siege. As, by that point, Tian Yue was also under siege at his headquarters at Wei Prefecture, Liang Chongyi had committed suicide after having been defeated by
Li Xilie the military governor of Huaixi Prefecture (淮西, headquartered in modern
Zhumadian,
Henan), and Li Weiyue, under pressure from imperial forces, had been killed by his own officer
Wang Wujun, who then submitted to imperial authority, it was believed that imperial authority would soon prevail over all of the rebels. 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. By winter 782, both Zhu and Wang (who was also displeased that he was not made a military governor despite his killing of Li Weiyue) were openly rebelling against the imperial government. They advanced south to aid Tian and dealt the imperial forces, under the commands of
Li Huaiguang the military governor of Shuofang Circuit,
Ma Sui the military governor of Hedong Circuit (河東, headquartered in modern
Taiyuan,
Shanxi), and
Li Baozhen the military governor of Zhaoyi Circuit (昭義, headquartered in modern
Changzhi,
Shanxi), forcing them to lift the siege on Wei Prefecture. In light of their victory, they each claimed princely titles to show independence from Tang — Zhu as the Prince of Ji, Tian as the Prince of Wei, and Wang as the Prince of Zhao. They offered the title of Prince of Qi to Li Na, and Li Na accepted. == As independent Prince of Qi ==