Soldiers assigned to a brigade under the Chinese PLA 72nd Group Army fast rope down helicopters during a recent round-the-clock live-fire training exercise. (eng.chinamil.com.cn/Photo by Zhang Mao)近日，第72集团军某旅开展跨昼夜实弹射击训练，锤炼综合作战能力。图为官兵进行索降。（英文中国军网/张毛 摄）