Introduce the Tang and Song dynasties of China by examining their central cities, Chang'an and Hangzhou

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Chang'an had the largest and most organized government in the world and among the inhabitants were Korean, Japanese, Jewish, and Christian communities. The city was laid out in a grid that demonstrated the Tang commitment to social order and mirrored, they believed, the order of the cosmos. Marco Polo was the only Westerner to see Hangzhou and he claimed that no other city in the world was as splendid. Hangzhou was called the "City of Heaven." Decorative lakes, ponds, and canals were the focus of design and craftsmen dominated the population because of the great demand for decoration. This city was the center of Asian culture.