Once Gray stumbled over a body. It was a woman, bleeding from a death wound in the throat. The priests had been here, and warfare in the Gobi reckons not of sex. The flutter of a yellow robe appeared in the corridor in front of them. A bow twanged, and Gray saw an arrow appear between the shoulders of the fleeing priest. A knife that the Buddhist held clattered to the floor. The _tumani_ shouted and pressed forward. They were under the wall now, and the passage began to rise. Gray saw that it was the same that led to the well. A sharp command from Gela silenced the Wusun. They ran out into the well and up the steps, savagely intent on their purpose. They emerged into confusion. Gray saw that other Wusun were running out from the adjoining passages, driving the priests before them. The Chinese on the wall had turned. Taken by surprise, they were firing hastily. Their foes were scattered now, and the fight became a hand-to-hand affair. One by one the torches dropped to the sand. Swords flashed in the moonlight. Gray saw some of the men of the leper pack, led by priests. These were met with arrows of the _tumani_ and driven back. They fled easily. Forced to hand-grips, the Chinese at the wall wavered. "_Aie!_" cried Timur. "The fight goes well. I am young again." He pointed exultantly at the leaping forms of the hunters. The girl walked quietly at Gray's side. The American picked up an empty musket and went forward. It was a poor weapon, but it served. Gela was in advance of his followers, who had cleared the wall now and were pacing forward, seeking out the groups of Chinese. By now the soldiers were running back through the outskirts of the city. Gray could see the leper pack mingling with the shadows among the sand dunes. Occasionally, there was a shrill cry as the Wusun hunted out a yellow-robed Buddhist. The Chinese were fleeing in earnest. The only light now came from the moon. It was a battle of shadows, wherein dim forms leaped and struck with bared knives, peering at each other's face. "_Aie!_" echoed the old chieftain, who was leaning on the shoulder of a _tumani_, "this is the way our fathers drove their foes before them. It is a goodly sight." He hobbled on, refusing to be left behind. Gray drew a deep breath, surveying the scene with experienced eye. The smoldering anger of the Wusun had cleared a temporary passage. "We are outside the city, Mary," he said. "It is not over yet," she responded quickly. "See--there are lights ahead, to the right." Gela had seen the same thing. He gathered together the hunters that remained about him and advanced cautiously. Rounding some dunes, they came full on the lights. It was the camp of the Chinese guards. Camels and horses were tethered among some make-shift tents. Lanterns flickered as coolies sought to assemble the beasts.