sentences:  By this time, the nationalist 35th Army, two divisions of the nationalist 3rd Army, and 4 nationalist cavalry divisions totaling more than thirty thousand attempted to reinforce the besieged Datong by attacking communist held Jining from Hohhot in three fronts.The communists, in turn, decided to deploy three brigades and local militia to continue the siege of Datong while the rest of force totaling more than forty thousands would be deployed to fight the nationalist reinforcement.After taking Zhuozi Mountain (Zhuo Zi Shan, 卓资山) to the west of Jining on September 10, 1946, the nationalist the Newly Organized 31st Division, the 11th Division, and the 17th Division attempted to attack Jining from north and west under the air cover, but they were beaten back by the communists.