Hengyang (simplified Chinese: 衡阳; traditional Chinese: 衡陽; pinyin: Héngyáng) is the second largest city of China's Hunan Province. It straddles the Xiang River about 160 km south of Changsha, Hunan's capital. The estimated population of Hengyang as of 2006 was 6.97 million persons. Hengyang is a busy and growing industrial city and the leading transportation center of Hunan, linking water, rail, and highway routes. Manufactures include chemicals, agricultural and mining equipment, textiles, paper, and processed foods. Lead, zinc, coal, and tin mines are nearby. Its former name was Hengzhou (Hengchow).