After the founding of the Republic of China in 1913, the name of Xin'an was changed back to Bao'an. People's Republic of China era In 1953, Shenzhen replaced Nantou as the administrative centre, due to the increasing prominence of the town as the southern terminus of the Chinese section of the Kowloon–Canton Railway. In 1979, Bao'an County was renamed Shenzhen City after the name of its county town since 1953, and the southern part of Shenzhen became a Special Economic Zone a year later. A diminished Bao'an County remained in the new city of Shenzhen outside the SEZ until 1992, when it was replaced by the Bao'an and the Longgang districts. See also History of Hong Kong under Imperial China Gazetteer of Xin'an County References Citations Sources Mr. Krone (1859). A Notice of the Sanon District, Transactions, Vol. 6, pp. 71–105, Hong Kong (1859). Further reading - Published online on 21 October 2010. Former counties of China County-level divisions of Guangdong History of Hong Kong History of Shenzhen Dongguan 330s establishments 4th-century BC establishments in China 1979 disestablishments in Asia 1970s disestablishments in Hong Kong 1970s disestablishments in China