Yixing is a county-level city administered under the prefecture-level city of Wuxi in southern Jiangsu province, China, and is part of the Yangtze River Delta. The city is known for its traditional Yixing clay ware tea pots. It is a pene-exclave with Changzhou. The city spans an area of 1,996.6 square kilometres (770.9 mi2), and has a registered hukou population of about 1,075,800 as of 2020.