The prefecture-level city of Wuhan, the capital city of Hubei province, China, has a long and rich history that dates back over 3,500 years. Starting out from the Shang Dynasty-era archaeological site at Panlongcheng associated with Erligang culture, the region would become part of the E state and Chu state during the Zhou dynasty. The region evolved into an important port on the middle reaches of the Yangtze River, and the cities of Hanyang, Hankou and Wuchang were united into the city of Wuhan in 1926. Wuhan briefly serving as the capital city of China in 1927 and in 1937. Modern-day Wuhan is known as 'China's Thoroughfare' (九省通衢) due to its status as a major transportation hub, with dozens of railways, roads and expressways passing through the city and connecting to other major cities.