From this date of 771 B.C., and for five hundred years more down to 250 B.C., when the Chou dynasty was extinguished, the rule of the feudal Emperors of China was almost purely nominal, and except in so far as this or that powerful vassal made use of the moral, and even occasionally of the military power of the metropolitan district when it suited his purpose, the imperial ruler was chiefly exercised in matters of form and ritual; for under all three patriarchal dynasties it was on form and ritual that the idea of government had always been based. Of course the other powerful satraps--especially the more distant ones, those not bearing the imperial clan-name, and those more or less tinged with barbarian usages--learning by degrees what a helpless and powerless personage the Emperor had now become, lost no time in turning the novel situation to their own advantage: it is consequently now that begins the "tyrant period," or the period of the "Five Dictators," as the Chinese historians loosely term it: that is to say, the period during which each satrap who had the power to do so took the lead of the satrap body in general, and gave out that he was restoring the imperial prestige, representing the Emperor's majesty, carrying out the behests of reason, compelling the other vassals to do their duty, keeping up the legitimist sacrifices, and so on. In other words, the population of China had grown so enormously, both by peaceful in-breeding and by imperceptible absorption of kindred races, that more elbow-room was needed; more freedom from the shackles of ritual, rank, and feudal caste; more independence, and more liberty to take advantage of local or changed traditions. Besides all this, the art of writing, though still clumsy, expensive, and confined in its higher and literary aspects to the governing classes, had recently become simplified and improved; the salt trade, iron trade, fish industry, silk industry, grain trade, and art of usury had spread from one state to the other, and had developed: though the land roads were bad or non-existent, there were great numbers of itinerant dealers in cattle and army provisions. In a word, material civilization had made great strides during the thousand years of patriarchal rule immediately preceding the critical period comprised between the year 842 B.C. and the year 771 B.C. The voices of the advocates and the preachers of ancient patriarchal virtues were as of men crying in a wilderness of substantial prosperity and manly ambition. Thus political and natural forces combined with each other to prepare the way for a radical change, and this period of incipient revolution is precisely the period (722-480) treated of in Confucius' history, the first history of China--meagre though it be--which deals with definite human facts, instead of "beating the air" (as the Chinese say) with sermons and ritualistic exhortations. CHAPTER III THE NORTHERN POWERS