Yima (simplified Chinese: 义马; traditional Chinese: 義馬; pinyin: Yìmǎ) is a county-level city of Henan, China. It is under the administration of the Sanmenxia city. Yima City is located in the western part of Henan province. It is located inside Xiaoshan Old Way, with Yangshao Peak to the north and Balcony Loewe to the south. Since ancient times, it was a key road between Luoyang and Changan. It is of great strategic importance, often a battlefield or a place for merchants to trade. Yima City was founded two years before the Qin Dynasty called "The New County". After reforms were made, Yima City reache county-level status in Henan Province (it took 81 years to build the city). It was originally under the administration of Luoyang. However, since 1986, it is under the administration of Sanmenxia City. Currently, it is one of forty-eight counties in Henan Province trying to expand its powers. It is also one of China's top hundred counties, as well as being the smallest city in China (112 square kilometers with a population of about 160,000). Yima City has the advantage of being self-sustaining, allowing for massive redevelopment of its industry and increased economic growth. In 2010, the city's per capita GDP was over seventy thousand RMB, which is about ten thousand US dollars. It ranks alongside moderately developed countries. In 2010, it was ranked first economically in Henan Province (perennial top five). The city is also known as a "The Village of Martial Arts".