“We must not let this stop us, Drake,” exclaimed Frobisher; “though I don’t yet quite see what we are to do. If we had a big stone we could burst the lock off, or out; but there isn’t so much as a pebble to be seen anywhere about.”

“How far are we away from the palace, do you think?” asked Drake. “If we are out of earshot of the pirates, I can easily manage it.”

“A good quarter of a mile, I should say,” replied Frobisher. “You could fire a rifle in here and they would never hear it.”

“I mean to do something like that,” returned the other. He produced his revolver, the muzzle of which he thrust against the keyhole, and pulled the trigger, turning his face aside at the same time.

The explosion in that confined space sounded like the roar of a twelve-inch gun, and dust and splinters flew in clouds; but when the air cleared the lock was gone, and in its place a ragged hole appeared, through which a clenched fist could easily be thrust. One or two strong pulls, both together, while gripping the edges of the hole, sufficed to loosen the whole affair, and presently, with a rattle of falling pieces of broken iron and springs, the door grated open, and they once more beheld the blessed light of day.

On stepping outside, they found themselves in the midst of a thick clump of bushes and vegetation which completely concealed the door from outside, and which had evidently not been disturbed for centuries, so thick and matted was the growth. Through this they pushed and broke their way, coming out a few moments later into what was evidently the remains of a once-spacious and magnificent garden. There were still traceable the outlines of old walks and lawns; ruined fountains and marble basins for gold-fish were scattered about; and there were even the remains of marble seats and couches whereon the warriors of Genghiz Khan’s retinue had been wont to take their ease during their all-too-brief respites from fighting. Sundials, beautifully modelled in bronze, and statues, in bronze, copper, marble, and in some cases even solid silver, were to be found in many of the corners. A few were still on their pedestals, but most of them lay broken on the ground, though all gave evidence of the high level to which Chinese art had advanced, even in those far-off days.

A quarter of a mile away was to be seen the palace the pair had recently vacated, and, peering cautiously from behind a screen of brushwood, they were able to make out the figures of some of the pirates, still apparently searching industriously; while the smoke of a fire, a little distance away, showed that they had by no means given up the pursuit, but were cooking a meal preparatory to instituting a fresh search of the palace precincts. They had not yet, apparently, thought of looking in the gardens.

“Think we dare risk it?” enquired Drake, voicing the idea uppermost in both their minds, and pointing toward the groups of unconscious pirates.

“Yes,” replied Frobisher. “They seem to be pretty fully occupied with their own concerns just now, and are evidently under the impression that we are still hiding somewhere in the building, so I think we could not hope for a better opportunity. They must, without fail, eventually discover that we are nowhere in the building, so we had better get away before they take it into their heads to start searching in this direction. I expect both groups have joined forces by this time, to participate in that meal they are preparing, so we should be able to get clear of the town without being seen.”

This point settled, the pair made their way cautiously out of the gardens, and soon gained the streets, which they traversed slowly, to save themselves as much as possible in case the pursuit should again be taken up. And in about half an hour, during which they had perceived no cause for alarm, they realised, by the gradual thinning of the houses, that they were approaching the outskirts of the city on its eastern side.