its perfection in Ts'u." Thus, even at this date, the Yang-tsz was regarded much as the Romans of the Empire regarded the Danube--as a sort of vague barrier between _civis_ and _barbarus_. In no sense was the Ts'u capital--at no time were the bulk of the Ts'u dominions--south of that Great River; nor, in fact, were the capitals of Wu and Yiieh south of it either, for one of the three mouths (the northernmost was as now), corresponded to the Soochow Creek and the Wusung River, as they pass through the Shanghai settlement of to-day; whilst the other ancient mouth entered the sea at modern Hangchow. We have given various other evidence above to show that, even earlier than this, the Yang-tsz was an unexplored region, known, and that only imperfectly and locally, to the Ts'u government alone. In the year 656 B.C. the First Protector called Ts'u to book because, in 1003 B.C., the Emperor had made a tour to the Great River and had never returned (see Chapter XX-XV.). Again, when the imperial power collapsed in 771 B.C., the first Earl of CHÊNG (a relative of the Emperor) consulted the imperial astrologer as to where he had better establish his new fief: his own idea was to settle southwards on the borders of the Yang-tsz; but he was dissuaded from this step on the ground that the Ts'u power would grow accordingly as the Chou power declined, and thus CHÊNG would all the easier fall a prey to Ts'u in the future if she migrated now so far south. The astrologer makes another observation which supports the view that Ts'u and orthodox China were originally of the same prehistoric stock. He says: "When the remote ancestor of Ts'u did good service to the Emperor (2400 B.C.), his renown was great, yet his descendants never became so flourishing as those of the Chou family." In 597 B.C., when the Earl of CHÊNG really was at the mercy of Ts'u, he said: "If you choose to send me south of the Yang-tsz towards the South Sea, I shall not have the right to object"; meaning, "no exile, however remote, is too severe for my deserts." In 549, when the Tsin generals were marching against Ts'u, they were particularly anxious to find good CHÊNG guides who knew the routes well. Finally, in 541, a Tsin statesman made the following observations to a prince (afterwards king) of Ts'u, who was then on a mission to Tsin, by way of illustrating for his visitor the conquests and distant expeditions of ancient times:--