5 _The Ch'en dynasty_ (A.D. 557-588) _and its ending by the Sui_ The more important of the independent generals in the east, Ch'en Pa-hsien, installed a shadow emperor, forced him to abdicate, and made himself emperor. The Ch'en dynasty which thus began was even feebler than the preceding dynasties. Its territory was confined to the lower Yangtze valley. Once more cliques and rival pretenders were at work and prevented any sort of constructive home policy. Abroad, certain advantages were gained in north China over the Northern Ch'i dynasty, but none of any great importance. Meanwhile in the north Yang Chien had brought into power the Chinese Sui dynasty. It began by liquidating the quasi-feudal state of the "Later Liang". Then followed, in 588-9, the conquest of the Ch'en empire, almost without any serious resistance. This brought all China once more under united rule, and a period of 360 years of division was ended. 6 _Cultural achievements of the south_ For nearly three hundred years the southern empire had witnessed unceasing struggles between important cliques, making impossible any peaceful development within the country. Culturally, however, the period was rich in achievement. The court and the palaces of wealthy members of the gentry attracted scholars and poets, and the gentry themselves had time for artistic occupations. A large number of the best-known Chinese poets appeared in this period, and their works plainly reflect the conditions of that time: they are poems for the small circle of scholars among the gentry and for cultured patrons, spiced with quotations and allusions, elaborate in metre and construction, masterpieces of aesthetic sensitivity--but unintelligible except to highly educated members of the aristocracy. The works were of the most artificial type, far removed from all natural feeling. Music, too, was never so assiduously cultivated as at this time. But the old Chinese music disappeared in the south as in the north, where dancing troupes and women musicians in the Sogdian commercial colonies of the province of Kansu established the music of western Turkestan. Here in the south, native courtesans brought the aboriginal, non-Chinese music to the court; Chinese poets wrote songs in Chinese for this music, and so the old Chinese music became unfashionable and was forgotten. The upper class, the gentry, bought these girls, often in large numbers, and organized them in troupes of singers and dancers, who had to appear on festal occasions and even at the court. For merchants and other people who lacked full social recognition there were brothels, a quite natural feature wherever there were considerable commercial colonies or collections of merchants, including the capital of the southern empire.