Photo taken on Oct. 30, 2012 shows the night scene of Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region. [Xinhua]

Photo taken on Oct. 22, 2012 shows the night scene of Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region. [Xinhua]

Photo taken on Oct. 31, 2012 shows the night scene of Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region. [Xinhua]

Photo taken on Nov. 26, 2012 shows the night scene of Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region. [Xinhua]

Photo taken on Oct. 4, 2012 shows the night scene of Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region. [Xinhua]