sentences:  The nationalist XV Corps and the XX Corps were redeployed to strengthen the defense of Nanchuan (南川) county and the region to its east to secure the retreat of Hu Zongnan's troops.To counter the nationalist move, Liu Bocheng and Deng Xiaoping ordered the communist V Corps and the 10th Army to push toward Luzhou and Yibin from southwestern Guizhou, while the communist III Corps and the 47th Army to cross the Black River (Wu Jiang, 乌江) to push toward Nanchuan (南川) county and help other communist forces to besiege and annihilate the nationalist XV Corps and XX Corps.By November 28, 1949, the communist forces had fulfilled their tasks by badly mauling the two nationalist corpses in the region to the north of the county, thus successfully concluded the Campaign to the North of Nanchuan (南川) County.