of the city as "Tsinan Fu" where the additional "Fu" () comes from the dated Chinese term for a provincial capital (). Jinan is also referred to by the nickname "City of Springs" (), because of the many artesian springs in the urban city centre and its surroundings. History Early history The area of present-day Jinan has been inhabited for more than 4000 years. The Neolithic Longshan culture was first discovered at Chengziya to the east of Jinan (Zhangqiu District) in 1928. One of the characteristic features of the Longshan culture are the intricate wheel-made pottery pieces it produced. Most renowned is the black "egg-shell pottery" with wall thicknesses that can go below 1 millimeter. During the Spring and Autumn period (722–481 BCE) and Warring States period (475–221 BCE), the area of Jinan was split between two states: the state of Lu in the west and the state of Qi in the east. In 685 BCE, the state of Qi started to build the Great Wall of Qi across Changqing county. Portions of the wall still remain today and are accessible as open air museums. Bian Que, according to the legend the earliest Chinese physician and active around 400–300 BCE, is said to have been a native of present-day Changqing County. Zou Yan (305–240 BCE), a native of Zhangqiu City, developed the concepts of Yin-Yang and the Five Elements. Joseph Needham, a British sinologist, describes Zou as "The real founder of all Chinese scientific thought." During the times of the Han dynasty (206 BCE – 220 CE), Jinan was the capital of the feudatory Kingdom of Jibei () and evolved into the cultural and economic hub of the region. The Han dynasty tomb where the last king of Jibei, Liu Kuan (), was buried at Shuangru Mountain was excavated by archaeologists from Shandong University in 1995 and 1996. More than 2000 artifacts such as jade swords, jade masks, and jade pillows have been recovered within the 1,500 square meter excavation site, emphasizing the wealth of the city during the period. Cao Cao (155 – 220 CE) was an official in Jinan before he became the de facto ruler of the Han dynasty. His son, Cao Pi, overthrew the last emperor of the Han and founded the Wei Kingdom (220 – 265 CE) of the Three Kingdoms Period. Beginning in the 5th century CE, Buddhism flourished in Jinan. The Langgong Temple