Photo taken on Dec. 21, 2019 shows a light show at a lighted ice and snow festival in Chengguan District of Lanzhou City, northwest China's Gansu Province. The winter festival opened here Saturday, featuring ice-snow sculpture, light show, snow homestay, among others. (Xinhua/Geng Xinning)

Photo taken on Dec. 21, 2019 shows animal illuminations exhibited at a lighted ice and snow festival in Chengguan District of Lanzhou City, northwest China's Gansu Province. The winter festival opened here Saturday, featuring ice-snow sculpture, light show, snow homestay, among others. (Xinhua/Geng Xinning)

A tourist plays on ice slide at a lighted ice and snow festival in Chengguan District of Lanzhou City, northwest China's Gansu Province, Dec. 21, 2019. The winter festival opened here Saturday, featuring ice-snow sculpture, light show, snow homestay, among others. (Xinhua/Geng Xinning)

Photo taken on Dec. 21, 2019 shows a homestay at a lighted ice and snow festival in Chengguan District of Lanzhou City, northwest China's Gansu Province. The winter festival opened here Saturday, featuring ice-snow sculpture, light show, snow homestay, among others. (Xinhua/Geng Xinning)

Photo taken on Dec. 21, 2019 shows an elephant illumination exhibited at a lighted ice and snow festival in Chengguan District of Lanzhou City, northwest China's Gansu Province. The winter festival opened here Saturday, featuring ice-snow sculpture, light show, snow homestay, among others. (Xinhua/Geng Xinning)