Liu Peng (Chinese: 劉怦; 727 – November 4, 785[1][2]), formally Duke Gong of Pengcheng (彭城恭公), was a general of the Chinese Tang dynasty, who served as military governor (Jiedushi)[3] of Lulong Circuit (盧龍, headquartered in modern Beijing) briefly in 785 following the death of his cousin, the warlord Zhu Tao.
[8] Liu served under Zhu Tao, and through his accomplishments was made the commander of the Xiongwu Army (雄武軍, based on modern Chengde, Hebei).
[4] In 775, Zhu Tao, per mandate of Emperor Daizong, attacked Tian Chengsi the military governor of Weibo Circuit (魏博, headquartered in modern Handan, Hebei), along with Li Baochen the military governor of Chengde Circuit (成德, headquartered in modern Shijiazhuang, Hebei).
He refused to give Chengde's Shen Prefecture (深州, in modern Hengshui, Hebei) to Lulong, as Zhu had requested.
Rather, he divided the seven prefectures of Chengde into three smaller circuits, making Zhang Xiaozhong, the first major Chengde officer to submit to Zhu and join Zhu's operations against Li Weiyue, the military governor of a newly created Yidingcang Circuit (易定滄, headquartered in modern Baoding, soon renamed to Yiwu (義武)), consisting of three prefectures, while giving two prefectures each to Wang and Kang Rizhi (康日知, another Chengde general who had submitted to imperial authority during the campaign), with the lesser titles of military prefect (團練使, Tuanlianshi).
Zhu was angered by Emperor Dezong's refusal to give him any part of Chengde territory (in particular, Shen Prefecture) and requiring him to capture two additional prefectures on his own, while Wang was angered that contrary to Emperor Dezong's implicit promises to give whoever killed Li Weiyue Li Weiyue's offices, he not only received a lesser title, but was in a position where he could easily be destroyed.
Within our own times, An Lushan and Shi Siming were destroyed and their families slaughtered because they, in arrogance, waged war and not cared about whether they succeeded or not.
As he was arriving at the headquarters at You Prefecture, however, Liu mobilized the remaining troops and exited the city to welcome him in grand ceremony.