In August of the 11th year of the Great Calendar (776), Li Lingyao, Marquis of Duyu, rebelled in Bianzhou (now Kaifeng, Henan), he killed the soldiers and horses, the assassin of Puzhou, Mengjian, and colluded with external forces Tian Chenghei in an attempt to control Bianzhou and Songzhou.

In September, the imperial court ordered the three towns of Huaixi, Yongping, Heyang, Huainan and Ziqing to send troops to attack Li Lingyao.

Yongping Jiedu made Li Mian order Liu Xuanzuo to lead the main force of the Yongping army to quell the rebellion, Liu Xuanzuo advanced quickly, he took advantage of Li Lingyao's defenselessness in Bianzhou, and attacked Songzhou (now Shangqiu, Henan) successfully.

At this point, the two states of Biansong controlled by Li Lingyao have lost one of them. Li Lingyao lost consecutive battles. In October, it was besieged by the soldiers of Zhuzhen in the city of Bianzhou.

Seeing that Li Lingyao was in danger, the external force Tian Chengsi immediately sent Tian Yue to lead troops to rescue him. Tian Yue led his troops south, defeated the soldiers of Yongping and Ziqing in Liu Xuanzuo's hometown of Kuangcheng, and advanced to Bianzhou with victory.

Unexpectedly, after camping in the north of Bianzhou City, at night by Huaixi General Li Chongqian led hundreds of light cavalry attack, killing for a while, the camp was panicked, at this time Liu Xuanzuo led the Yongping army to arrive, and Huaixi Jiedu made Li Zhongchen, Heyang Sancheng Ma Sui combined forces to attack, Tian Yue's army was defeated without a fight, and suffered heavy losses.

Li Lingyao was desperate and helpless, fled overnight, was captured during the escape, and was sent to Beijing to be beheaded. The following year, that is, in the twelfth year of the Great Calendar (777), the imperial court subordinated Songzhou to the Yongping Army, and at the request of Li Mian, Liu Xuanzuo was awarded the history of Songzhou.

In the second year of the establishment of Tang Dezong (781), Liu Xuanzuo was crowned as the Imperial History Zhongcheng, the Song Dynasty Yingjie Envoy, and the Xuanwu Jie Envoy, and the Xuanwu Army.

In the same year, after the death of Li Zhengji, the envoy of Pinglu Jiedu, his son Li Na was mourned and rebelled, and his clansman Li Wei returned to the imperial court in Xuzhou (Zhipengcheng, now Xuzhou City, Jiangsu), and Li Na sent troops to besiege him.

The imperial court issued an edict ordering Liu Xuanzuo and other troops to rescue Li Wei. In November, Liu Xuanzuo and Shence knew the soldiers and horses Qu Huan, the assassin of Huazhou Li Cheng and the Shuofang general Tang Chaochen jointly rescued Xuzhou, defeated Wei Bo and Pinglu troops, beheaded 8,000 people, forced them to break the siege and escape, and Jianghuai Caoyun began to dredge.

Liu Xuanzuo was added as a doctor of imperial history for his merits. After that, Liu Qia recovered Puzhou, surrendered the enemy general Yang Linghui, divided his troops to attack Puyang, recruited the defending general Gao Yanzhao, and opened up the Puyang ferry.

The imperial court once again discussed merit, added Liu Xuanzuo as the secretary of the military department of the inspection school and the observer of Cao Pu, added 400 households in the food city, and immediately awarded the rank of Ziqing Yanyun recruitment envoy and deputy envoy of Bianhua Capital.

Liu Xuanzuo has made many military exploits and has risen to prominence, but he can still keep a clear head and change his mistakes.

When he was guarding Bianzhou, he listened to slanderous rumors that he wanted to kill the general Zhai Xinggong, and no one dared to come forward to advise. Zheng She, a priest (a scholar who did not hold an official position), was witty and made good use of hidden words, he asked to see Xuan Zuo, and said: "I heard that Zhai Xinggong offended the adult, and the adult took the opportunity to kill him to atone for the crime, and I hope that the adult can agree to my small request, after Zhai Xinggong's execution, let me see his corpse." Liu Xuanzuo felt strange, Zheng Shi said

"I have heard people say that people who have died unjustly have different expressions on their faces than ordinary dead people, and I have never seen them in my life, so I want to see them. Liu Xuanzuo had an epiphany, and after finding out the truth, he pardoned Zhai Xinggong.