Rise of the Tang
In 202 BC, the brutal Qin Dynasty saw the less competant heirs of a ferocious ruler lose their power to the more tolerant Han Dynasty. The parallels with the rise and fall of the Sui Dynasty are unavoidable. When the Sui Yang Ti fell to rebellion in 618 AD, it was not fragmented for long. A wise general, Li Yuan, Duke of Tang swiftly reestablished control, reunifying China under the Tang Dynasty in 624 AD. The Tang Emperors expanded Chinese power into the Middle East, respected Buddhism, and restored the Confucian scholars to their traditional role running the government bureaucracy. To support this, Tang Dynasty education was characterized by a broad liberal arts program in the Confucian style.
The Tang Emperors also created one of the most enduring institutions in Chinese history. Civil service exams were instituted forming the entry point for anyone of high or low birth into the university system and the large Chinese government. Test scores were one crucial component not only for entry into government service, but determining how highly one's service began. This system was one of the most progressive meritocracies ever instituted in practice. Yet the Tang was also a period when the wealthy enlarged their estates generation by generation leaving a swelling population with little to no place to live.
None of these things are why the Tang is still remembered by the Chinese today. The Tang Dynasty was a golden age in the Chinese consciousness; the time not only of China's greatest power, but its finest culture and greatest artists. Just like the Rome of Caesar Augustus which produced Vergil, Catallus, and Horace, or the London of Elizabeth I which produced Shakespeare and Marlowe, Xian under the Tang emperors saw China's greatest poets Du Fu, Li Bai, and Wang Wei write the greatest verses in Chinese history, poems every Chinese school child learns to this day.
The Tang Dynasty also distinguished itself in other important ways. Artisans produced porcelain so beautiful, that today the art is still referred to simply as, fine china. Movable type was created using wood blocks enabling the first printing of books, both text as well as fully illustrated pages. Chinese armies also ruled unchallenged under a succession of Tang Emperors, including the only woman to bear the title of Di, emperor, and rule China. These emperors conquered all the territory controlled under the Han Dynasty and charged along the Silk Road, taking Afghanistan and provinces of what had once been the empire of the Persians and Alexander the Great. The Tang Dynasty was the most dynamic empire of the Medieval Era and the Chinese still look back on it as a golden age in their history.
Downfall of a Dynasty
All good things come to an end, however, and as the Chinese tell the story the end was neither long nor sweet. China's first - and last - female emperor was brilliant and strong. She ruled by her wits and her force of will over a court that did not approve of her but proved incapable of removing her. When she grew older she attempted to have her daughter groomed for the succession, and this finally succeeded in uniting her many disparate enemies who staged a coup and had her packed off. The compromise candidate to succeed her was her own son who became the emperor Ming Huang. Ming ("brilliant"), was an excellent description of his early reign which saw the peak of Tang power. However, in his old age, Ming Huang became obsessed and subservient to his favorite court concubine, Yang Guifei. Sources are quite specific that the collapse of the Tang Dynasty began at this moment.
In 751 AD, the Tang fought one of the epic battles in history. Facing the armies of the Abbasid Caliphate, Chinese and Muslim forces clashed at the Battle of the Talas River in Central Asia. The Abbasid victory secured Central Asia for Muslim culture and brought a halt to the Chinese advance in the Middle East. In the turmoil which followed this defeat, Ming Huang succumbed to the advice of his concubine and entrusted the Chinese frontiers to a Turkish general, named An Lushan, whose greatest gift was his ability to flatter the self-centered Yang Guifei. The reason for his flattery was soon apparent to all; in 755 AD, An Lushan revolted.
The An Lushan rebellion was ultimately put down but it effectively broke Tang power. The court was forced to flee Xian and plot the recovery of North China from the South. However, not before they had to cross the arduous mountains which separate them; a journey on which Ming Huang's soldiers finally became outraged and forced the emperor to watch as they executed Yang Guifei. It was the greatest and most terrible humiliation for the greatest emperor in Chinese history. Ming Huang's flight through the mountains would become a symbolic theme in many poems and paintings of later dynasties.
Although the capital would be recovered, the emperors never again ruled with the same power; henceforth they had to vie with local nobility to exert imperial control in fact rather than just theory. In 791 AD, the Chinese clashed with the Tibetan kingdom of Tufan at the Battle of Tingzhou. The Tibetan victory marked the high point of their empire and the continuing contraction of Chinese power. From 874 - 884 AD a series of especially violent peasant rebellions rocked China and effectively broke whatever power the Tang emperors retained. By time the last Tang emperor was deposed in 907 AD, it was noteworthy but politically unimportant.
Like the Age of Division the years that followed were marked by intense political fragmentation. The period from 907 - 960 AD is known as the Five Dynasties and 16 Kingdoms; the name alone gives a good analysis of the politics of the time. However, in 960 AD one of the rival warlords, Zhao Kuangyin, emerged victorious, and founded the Song Dynasty. The Tang Dynasty was powerful and romanticized afterward. It was an important cultural peak in Chinese history, but the Song emperors showed levels of restraint and fostered the development of China in new and revolutionary ways, even if they were not completely understood at the time. Thus, 960 AD marks the beginning of the Renaissance in China.