Jiangsu has the country's fifth largest provincial population (after Henan, Shandong, Guangdong, and Sichuan). It is China's leading province in both agriculture and industry, as well as a center of education, science, and research. Yet regional variation within the province are significant. Southern Jiangsu is one of China's wealthiest regions, yet the northern Subei region contains some of China's most poverty-str…