Changshu, a county-level city in Jiangsu Province, called Yu for short, is located in the lower reaches of the Yangtze River. Its envied cultural history, beautiful landscape and abundant produce have won itself a great admiration in east China. The 20th century has witnessed an acceleration of its economic development, with many indexes leading the nation among peer county-level cities. In 2012, its regional gross product was 187 billion RMB yuan, that is, 123.9 thousand RMB yuan per permanent resident.