Qīngyuǎn (Chinese: 清远), historically known as Tsingyün, is a prefecture-level city in northwestern Guangdong province of Southern China. Its total population is 3.7 million, and the primary language spoken is Cantonese. With an area of 19,015 km², Qingyuan is the city of the largest land area in Guangdong. It is located on the Bei Jiang river, is surrounded by mountainous areas, and features an expressway to Guangzhou.