Oxford University, located in Oxfordshire, southeast England, is a non-urban county and a city, covering an area of 45.59 square kilometers. It is the birthplace of Oxford University, the oldest university in English-speaking countries, with a population of about165,000, of which153,900 people live in the central city. The central city is located 80 kilometers southwest of London. The famous Chawell River and Thames River run through Oxford and meet in the south of the city.

Ruoqiang, the largest county in China, is much smaller. Ruoqiang is the largest county in China, with an area of 208,226 square kilometers, which is nearly 4,000 square kilometers less than that in Jiangsu and Zhejiang provinces. The smallest is Changdao County, Shandong Province, with an area of only 56 square kilometers, but it is also larger than the 45.59 kilometers of Oxford Shao!