Chinese surnames, other than place names, are derived from a variety of sources: from nature, as River, Stone, Cave; from animals, as Bear, Sheep, Dragon; from birds, as Swallow, Pheasant; from the body, as Long-ears, Squint-eye; from colours, as Black, White; from trees and flowers, as Hawthorn, Leaf, Reed, Forest; and others, such as Rich, East, Sharp, Hope, Duke, Stern, Tepid, Money, etc. By the fifth century before Christ, the use of surnames had definitely become established for all classes, whereas in Europe surnames were not known until about the twelfth century after Christ, and even then were confined to persons of wealth and position. There is a small Chinese book, studied by every schoolboy and entitled _The Hundred Surnames_, the word "hundred" being commonly used in a generally comprehensive sense. It actually contains about four hundred of the names which occur most frequently. About two hundred and twenty years before Christ, the feudal system came to an end. One aggressive state gradually swallowed up all the others; and under the rule of its sovereign, China became once more an empire, and such it has ever since remained. But although always an empire, the throne, during the past two thousand years, has passed many times from one house to another. The extraordinary man who led his state to victory over each rival in turn, and ultimately mounted the throne to rule over a united China, finds his best historical counterpart in Napoleon. He called himself the First Emperor, and began by sending an army of 300,000 men to fight against an old and dreaded enemy to the north, recently identified beyond question with the Huns. He dispatched a fleet to search for some mysterious islands off the coast, thought by some to be the islands which form Japan. He built the Great Wall, to a great extent by means of convict labour, malefactors being condemned to long terms of penal servitude on the works. His copper coinage was so uniformly good that the cowry disappeared altogether from commerce during his reign. Above all things he desired to impart a fresh stimulus to literary effort, but he adopted singularly unfortunate means to secure this desirable end; for, listening to the insidious flattery of courtiers, he determined that literature should begin anew with his reign. He therefore determined to destroy all existing books, finally deciding to spare those connected with three important departments of human knowledge: namely, (1) works which taught the people to plough, sow, reap, and provide food for the race; (2) works on the use of drugs and on the healing art; and (3) works on the various methods of foretelling the future which might lead men to act in accordance with, and not in opposition to, the eternal fitness of things as seen in the operations of Nature. Stringent orders were issued accordingly, and many scholars were put to death for concealing books in the hope that the storm would blow over.