Tourists visit the imperial tombs dating back to the Western Xia Dynasty (1032-1227) in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Oct. 2, 2019, the second day of the 7-day-long National Day holiday. (Photos: Xinhua)

Tourists visit the imperial tombs dating back to the Western Xia Dynasty (1032-1227) in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Oct. 2, 2019, the second day of the 7-day-long National Day holiday.

Tourists visit the imperial tombs dating back to the Western Xia Dynasty (1032-1227) in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Oct. 2, 2019, the second day of the 7-day-long National Day holiday.

Tourists visit the imperial tombs dating back to the Western Xia Dynasty (1032-1227) in Yinchuan, capital of northwest China's Ningxia Hui Autonomous Region, Oct. 2, 2019, the second day of the 7-day-long National Day holiday.