Nanjing, the capital city of Jiangsu Province and the provincial political, economic and cultural center, is located in the lower reaches of Yangtze River, southwest of the province. The population of its urban area is about 2.7 million. Nanjing is one of the historical and cultural cities rectified by the state. The discovery of the Nanjing Ape revealed the trace of human influence some 350,000 years ago. The area war inhabited and cultivated about 6000 years ago. Nanjing bears the reputation of the Capital of Ten Dynasties, being since the year 229 AD the capital of Wu, Eastern Jin, Song, Qi, Liang, Chen, Southern Tang, Ming, Taiping Kingdom, and Republic of China subsequently. Nanjing is a place of celebrities and humanities, with a splendid cultural heritage. It produced scientists, literators, and artists. The great scientist Zu Chongzhi computed the Ludolphian number with the accuracy to the 7th place of decimals, 1000 years ahead of the rest of the world. The Imperial Academy of Ming Dynasty in Nanjing, which received some 9000 students, was the largest higher education institution in China at the time. Many celebrities were buried in Nanjing after their death. The attraction of Nanjing consists in the combination of rich natural and cultural heritages. It is a famous scenic tourist city, which is an integration of mountains, waters, forest, as well as monuments and historical relics. With many a relics of the Republic of China era in particular, Nanjing is recognized as the museum of modern Chinese history.