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Liu Yanzhen was appointed over 20,000 troops to defend against the invading Later Zhou, despite Song Qiqiu critiquing his inadequacies as a commander. At Zhengyang the Later Zhou constructed a floating bridge to cross the Huai River and invade Huainan. Going against advice to maintain a defensive posture, Liu Yanzhen led an advance to Zhengyang. A Later Zhou force under Li Chongjin had recently crossed the bridge and moved to engage the incoming Southern Tang. The battle was a decisive rout for the Southern Tang as they lost 10,000 men and Liu Yanzhen himself was executed. The Later Zhou began to capture settlements south of the Huai River.