Southern Yan
Liu Yu's first expedition was against Southern Yan in 409 CE. The Jin army attacked from Nanjing to Xiapei, and then to Longchen. Along the roads, Jin's forces built fortresses to prevent Southern Yan forces from cutting off their supplies. By May, Jin forces reached the Southern Yan capital at Guangdu. When he reached the area, Liu Yu saw that the ground was covered with grain and he said to his men that: "The Southern Yan ruler is already in my hand", as there would be no supply problems. In February 410 CE, Jin forces captured Guangdu and put an end to Southern Yan.