At the Sino-Vietnamese border, a group of nine people headed by a deputy company commander and a platoon commander braved the enemy's intensive artillery fire to the No. 3 post, a natural cave, and began three months of hard fighting.

At the Sino-Vietnamese border, a group of nine people headed by a deputy company commander and a platoon commander braved the enemy's intensive artillery fire to the No. 3 post, a natural cave, and began three months of hard fighting.