They were still far from the Gobi's edge. The distance seemed to stretch out interminably. It is not easy to cross the broad bosom of China.

He wondered what success they would have. What was the city of Sungan? How had it escaped observation? How did a city happen to be in the desert, anyway?

What was the pale sickness Brent had spoken of? Brent had died. From natural causes, of course. Gray gave little heed to Delabar's wild surmises. But the conduct of Wu Fang Chien afforded him food for thought.

Had the vice-governor actually known of their mission? His words might have had a double meaning. And they might not. The silk scroll meant little. Delabar had read warning into it; but was not that a result of his imagination?

Gray turned uncomfortably on his bed and considered the matter. How could Wu Fang Chien have known they were bound for Sungan? Their mission had been carefully kept from publicity. Only Van Schaick and his three associates knew of it. Men like Van Schaick and Balch could keep their mouths shut. And Delabar was certainly cautious enough.

Gray cursed the heat under his breath, with added measure for the dog which seemed bound to make a night of it. The chatter at the hotel door had subsided with midnight. But the guitar still struck its melancholy note, accompanied by the intermittent wail of the sorrowing dog.

No, Gray thought sleepily, Wu Fang Chien could not have known of their mission. He had let Delabar's nerves prey on his own—that was all. Delabar was full of this Asia stuff, especially concerning the priests——

Gray's mind drifted away into vague visions of ancient and forgotten temples. The guitar note became the strum of temple drums, echoing over the waste of the desert. The dog's plaint took form in the wailing of shrouded forms that moved about gigantic ruins, ruins that gave forth throngs of spirits. And the spirits took up the wail, approaching him.

A green light flamed from the temple gate. The gongs sounded a final crash—and Gray awoke at the noise of the stick and coins falling to the floor.

He became fully conscious instantly—from habit. And was aware of two things. He had been asleep for some time. Also, the door had been thrown open and dark forms were running into the room.