It may well be that Hoangti had his own fame largely in view in this unprecedented act, as in his preceding wall-building and road-making. He may have proposed to sweep away all earlier records of the empire and make it seem to have sprung into existence full-fledged with his reign. But if he had such a purpose, he did not take fully into account the devotion of men of learning to their cherished manuscripts, nor the powers of the human memory. Books were hidden in the roofs and walls of dwellings, buried underground, and in some cases even concealed in the beds of rivers, until after the tyrant's death. And when a subsequent monarch sought to restore these records of the past, vanished tomes reappeared from the most unlooked-for places. As for the "Book of History" of Confucius, which had disappeared, twenty-eight sections of the hundred composing it were taken down from the lips of an aged blind man who had treasured them in his memory, and one was obtained from a young girl. The others were lost until 140 B.C., when, in pulling down the house of the great philosopher, a complete copy of the work was found hidden in its walls. As for the scientific works that were spared, none of them have come down to our day. We shall now briefly complete our story of the man who made himself the most thoroughly hated of all Chinese monarchs by the literati of that realm. Organizing his troops into a strong standing army, he engaged in a war of conquest in the south, adding Tonquin and Cochin China to his dominions, and carrying his arms as far as Bengal. In the north he again sent his armies into the desert to chastise the troublesome nomads, and then, conceiving that no advantage was to be gained in extending his empire over these domains of barbarism, he employed the soldiers as aids in the task of building the Great Wall, adding to them a host of the industrial population of the north. In 210 B.C. Hoangti was seized with some malady which he failed to treat as he did his enemies. Neglecting the simplest remedial measures, he came suddenly to the end of his career after a reign of fifty-one years. With him were buried many of his wives and large quantities of treasure, a custom of barbarous origin which was confined in China to the chiefs of Tsin. Magnificent in his ideas and fond of splendor, he despised formality, lived simply in the midst of luxury, and distinguished himself from other Chinese rulers by making walking his favorite exercise. While not great as a soldier, he knew how to choose soldiers, and in his administration was wise enough to avail himself of the advice of the ablest ministers.