In pics: aviation museum opened in Yinchuan, northwest China's Ningxia

A visitor looks at a model of helicopter at a newly-opened aviation museum in Yinchuan, northwest China's Ningxia Hui Autonomous Region, Dec. 30, 2019. Covering an area of 3,800 square meters, the aviation museum began to open to the public from Monday. (Xinhua/Wang Peng)