As it turned out, however, the movements of the party were not to be so straightforward a matter as Jong anticipated; for though it froze very hard that evening, as it can freeze in the north of China, the night brought more than intense cold with it. David's was the middle watch, and he was standing near the fire, struggling to keep himself fully awake, when of a sudden a distant sound fell on his ear. He listened intently, and then went to the opening. At once a faint whimpering sound came from a point some little way distant. He fancied he heard something remarkably like a loud snarling, while as he watched he was almost sure that he caught sight of several sneaking forms passing to and fro outside, like black shadows crossing the snow.
'Come and look out into the open,' he asked of Jong, whose turn it was to take the next watch. 'There is something there, but what I am not sure. Come and listen.'
They pushed the flaps of the tent back cautiously and stared out. Jong instantly gave vent to an expression of astonishment, not unmixed with alarm, and darting into the hollow waked the two soldiers.
'Come out and tell us what you hear and see,' he demanded anxiously. 'His Excellency heard sounds, and is sure he saw figures passing across the snow. The news is disquieting.'
There was a decided expression of fear written on Chu-Li's not too handsome features as he withdrew into the hollow.
'Excellency,' he said gravely, 'those are wolves who prowl about outside. In Mongolia they can be very dangerous, though I hardly expected to find them here, or would have warned you. But there is forest land to the north, and it may happen that the cold has been very severe there for a little while, causing these beasts to travel for their food. If they are hungry, then they become very dangerous. Their ferocity is extraordinary.'
David learned the news with a distinct qualm. He had fought against human beings already, and had displayed a fair amount of courage; but against savage beasts was an altogether different matter.
'Why,' he exclaimed, taken aback at the announcement, 'I had no idea that such beasts were to be found in these parts. And you think they may be dangerous, Chu-Li? What has attracted them?'
'The ponies, Excellency; they would smell the animals a long way off, and if there were none they would scent us. Their powers of detecting food are extraordinary.'
There could be no doubt, in fact, that the presence of David's little party had been the attracting cause that had brought the wolves in their direction, while all doubt as to the animals themselves was cleared up within a few minutes. Standing at the exit of the hollow or cave in which he and his men had taken refuge from the storm, our hero soon saw the wolves distinctly. They crept hither and thither past the hollow, their eyes always directed on it. Sometimes there was a whimper from one of the brutes, but for the most part they went to and fro silently like ghosts, making those within the hollow almost shiver.