Zheng Zongmeng no relation Qinzong
Jin Wuzhu (金兀朮, died 1148), also known by his sinicised name Wanyan Zongbi (完顏宗弼), was a prince, military general and civil minister of the Jurchen-led Jin dynasty of China. He was the fourth son of Aguda (Emperor Taizu), the founder and first emperor of the Jin dynasty. Wuzhu started his career in the military in his youth, when he participated in the Jurchen rebellion led by his father against the Khitan-led Liao dynasty. Between the late 1120s and 1130s, he fought for the Jin dynasty in a series of wars against the Han-led Northern Song dynasty and its successor state, the Southern Song dynasty. In 1137, in recognition of his contributions in battle, he was appointed as Right Vice-Marshal (右副元帥) and enfeoffed as the "Prince of Shen" (瀋王). In the final decade of his life, he was appointed to several high-ranking positions in the Jin imperial court, including Left Chancellor (左丞相), Palace Attendant (侍中), Taibao (太保), Marshal of the Capital (都元帥), Taifu (太傅), and Taishi (太師). He died of illness in 1148. Throughout his life, he had served under three Jin emperors – Emperor Taizu (his father), Emperor Taizong (his uncle), and Emperor Xizong (his nephew).War against the Northern Song dynasty
Wuzhu participated in the Jin–Song Wars, which broke out in 1125 between the Jin dynasty and the Han Chinese-led Northern Song dynasty. He served as an officer in the Jin dynasty's Eastern Army, which was commanded by his second brother, Wolibu (斡離不; Wanyan Zongwang), who held the appointment of Right Vice-Marshal (右副元帥). In the first month of 1126, Wolibu sent Wuzhu to attack Tangyin County; Wuzhu won the battle and forced the 3,000 Song defenders to surrender. Soon after, the Eastern Army reached the Yellow River and attempted to cross, but the Song forces had already set the pontoon bridges on fire. The Jin officer Helusuo (合魯索) led 70 horsemen to cross the river at a shallow point and killed 500 Song soldiers burning the bridges. Wolibu sent Wu Xiaomin (吳孝民) as a messenger to the Song capital, Bianjing (present-day Kaifeng, Henan Province), to admonish the Song dynasty for breaking its earlier alliance with the Jin dynasty. At the same time, Wuzhu, leading 3,000 light cavalry, approached Bianjing. When he received news that the Song ruler, Emperor Huizong, had fled from Bianjing after abdicating the throne to his son Emperor Qinzong, he led his horsemen in pursuit but failed to capture the emperor. However, they managed to obtain 3,000 horses. When Jin forces besieged Bianjing, the Song dynasty agreed to cede Taiyuan, Zhongshan (中山) and Hejian (河間) prefectures to the Jin dynasty in return for peace. The Jurchens agreed and retreated back to Yanjing (燕京; present-day Beijing).In the eighth month of 1126, Wuzhu accompanied Wolibu to attack the Song dynasty. By the fourth month of the following year, Jin forces had conquered Bianjing and captured the Song emperors Huizong and Qinzong. This event, historically known as the Jingkang Incident, marked the fall of the Northern Song dynasty.Wolibu died of illness in the sixth month of 1127 and was succeeded by his third brother, Eliduo (訛里朵; Wanyan Zongfu or Wanyan Zongyao), as Right Vice-Marshal (右副元帥). In the 12th month, Eliduo received orders to suppress anti-Jin rebellions in Shandong Province. Wuzhu participated in the campaign. First, he defeated a few thousand troops led by Song general Zheng Zongmeng (鄭宗孟) in Qingzhou. Next, he defeated the Huangqiong forces (黃瓊軍) led by Song general Zhao Cheng (趙成) in Linqu. In the first month of 1128, when Eliduo and his army were planning to retreat after successfully suppressing the rebellions, they were ambushed at Qinghe (青河) by a 30,000-strong Song army. Wuzhu led the attack on the enemy and killed thousands of them.