Photo taken on March 1, 2021 shows the scenery of Tuoliang scenic area in Pingshan County, north China's Hebei Province. (Photo by Xu Jianyuan/Xinhua)

Photo taken on March 1, 2021 shows the scenery of Tuoliang scenic area in Pingshan County, north China's Hebei Province. (Photo by Liang Zidong/Xinhua)

Photo taken on March 1, 2021 shows the scenery of Tuoliang scenic area in Pingshan County, north China's Hebei Province. (Photo by Xu Jianyuan/Xinhua)

Aerial photo taken on March 1, 2021 shows the scenery of Tuoliang scenic area in Pingshan County, north China's Hebei Province. (Photo by Liang Zidong/Xinhua)