"Good heavens!" I whispered. "Gideon Morse is safe enough here."
"In ten seconds," Pu-Yi whispered, "by pressing that bell button, Mulligan could have the room full of armed guards, and as you see, this steel fence is impassable without the key. There are only three keys, of which I have one."
He produced it as he spoke, inserting it in a gleaming, complicated lock, slid back a portion of the steel-work, and we stepped into the guard-room.
"We are now," said my guide, "on the platform immediately under that on which the City rests, and about a hundred feet below it. This platform is entirely occupied by this guard-room, a range of store and dwelling houses, the elaborate electric installation, power for which is supplied from below, Turkish baths, a swimming bath, and so forth. Please follow me."
With a glance of repulsion at the drugged giant on the couch I went after Pu-Yi, through a door on the opposite side of the room, and down a long corridor with windows on one side and arched recesses on the other. At the end of this we came out again into the open air, that is to say that we were shielded by walls and buildings, walking as it were in a sleeping town upon streets paved with wood blocks, while instead of the vault of heaven above, about the height of a tallish church tower were the great beams and girders which supported the City itself, and from which, at regular intervals, hung arc lamps which threw a blue and stilly radiance upon the streets and roofs of the buildings.
It was colossal, amazing, this great colony in the sky. Now and then we heard voices, the rattle of dice thrown upon a board, and the wailing music of Chinese violins. Two or three times silent figures passed us with a low bow, and without a glimmer of curiosity in their impassive faces, until at length we came to a long row of lift doors, with an inscription above each one, and in the center, dividing them into sections, a large, vaulted stairway mounting upwards till it was lost to sight. It was lined with white tiles like a subway in some great railway terminus.
Pu-Yi unlocked the door of a small lift. We got into it, it rushed up for a few seconds and then we came out of a small white kiosk upon a scene so wonderful, so enchanted that I forgot all else for a second, caught hold of my conductor's thin arm and gave a cry of admiration and wonder. A mass of clouds had just raced before the moon, leaving it free to shed its light until another should envelop it.
The pure radiance, unspoiled by smoke, mist, or the miasma which hangs above the roofs of earthly cities, poured down in floods of light upon a vast quadrangle of buildings, white as snow and with roofs that seemed of gold.
I had the impression of immensity, though magnified a dozen times, that the great quadrangle of Christ Church, Oxford, or the court of Trinity, Cambridge, give to one who sees them for the first time. But that impression was only fleeting. These buildings seemed to obey no architectural law. They were tossed up like foam in the upper air, marvelous, fantastic, beautiful beyond words.
We hurried along by the side of a great green lawn which might have been a century growing, past bronze dragons supporting fountain basins, down an arcade, where the broad leaves of palms clicked together and there was a scent of roses, until we hurried through a little postern door and up some steps and came out in what Pu-Yi whispered was the library.