1000 square meters. According to official website of Ningxia government, the standard area of Ningxia motorcycle training ground is 1000m2, with a length of not less than 50m and a width of not less than 20m. Ningxia Hui Autonomous Region, referred to as Ning for short, is a provincial administrative region in People's Republic of China (PRC), and Yinchuan, the capital, is one of the five minority autonomous regions in China.