Li Xiaogong
For several months, Tang and Song forces battled on the border, but as the main forces under Li Xiaogong and Li Jing approached, Fu had his generals Feng Huiliang () and Chen Dangshi () take up defense positions at Mount Bowang (博望山, in modern Ma'anshan, Anhui), preparing for the assault. Fu's orders to Feng and Chen were to refuse engagement and to wear the Tang forces out, but Li Xiaogong cut off their food supplies, and so they abandoned the strategy and challenged Li Xiaogong. Most of Li Xiaogong's subordinates believed that Feng and Chen had a strong army and could not be easily defeated, and so that Li Xiaogong should bypass them and attack Danyang directly. However, Li Jing opposed, pointing out that if Tang forces did not defeat Feng and Chen first, they would not be able to siege the well-fortified Danyang easily. Li Xiaogong agreed and engaged Feng and Chen directly, defeating them, as the Song forces lost morale when they saw that Kan was fighting on the Tang side. Feng and Chen fled back to Danyang.