17 copper coins unearthed today in Xiji County, Ningxia Hui Autonomous Region, located in the north section of the East Road of China's Silk Road, were identified as "Guishuang Dynasty" coins left over from the ancient Silk Road. Rising from Central Asia's slavery country, it developed into its heyday from 105 to 250 AD. It was considered to be one of the four great powers of Europe and Asia at that time. It was tied with the Han Dynasty, Rome, and rest. A type of coin with important historical value, manufactured by Greek pressing method, with a texture of gold, silver, copper and other materials. The front of the coin is often designed with the same emphasis on characters, characters and patterns, and the shape is approximately circular or oval. Dozens of Guishuang coins have been unearthed in the Hotan area. The following statements are consistent with the original:. ['For the first time in China, precious coins have been discovered.', 'Guishuang Dynasty emerged around the first century AD.', 'Guishuang Dynasty was involved in the trade of the ancient Silk Road.', 'Guishuang coin uses the most popular minting technology at the time.']