Aerial photo taken on March 25, 2019 shows the scenery of Shexian County, east China's Anhui Province. (Xinhua/Wang Wen)

Aerial photo taken on March 25, 2019 shows the scenery of cole flower fields in Yangxian County, Hanzhong City, northwest China's Shaanxi Province. (Xinhua/Luo Hantao)

Aerial photo taken on March 27, 2019 shows the scenery of Xibaipo Township of Pingshan County, north China's Hebei Province. (Xinhua/Xing Guangli)

Photo taken on March 27, 2019 shows the scenery of Xibaipo Township of Pingshan County, north China's Hebei Province. (Xinhua/Xing Guangli)

Photo taken on March 26, 2019 shows the scenery of cole flowers at Shitan Village, Shexian County, east China's Anhui Province. (Xinhua/Shi Guangde)

Aerial photo taken on March 26, 2019 shows the scenery of Taiziwan Park in Hangzhou, east China's Zhejiang Province. (Xinhua/Wu Pengfei)

Aerial photo taken on March 25, 2019 shows the scenery of Shexian County, east China's Anhui Province. (Xinhua/Wang Wen)

Aerial photo taken on March 26, 2019 shows the scenery of Paixiong Village, Aizhai Town in Jishou City, central China's Hunan Province. (Xinhua/Liu Zhenjun)

Aerial photo taken on March 26, 2019 shows the scenery of Yinji Township, Xiangyang City, central China's Hubei Province. (Xinhua/Yang Dong)

Aerial photo taken on March 26, 2019 shows the scenery of Jintang Island of Zhoushan, east China's Zhejiang Province. (Xinhua/Yao Feng)

Aerial photo taken on March 26, 2019 shows the scenery of Xin'anjiang River in Shexian County, east China's Anhui Province. (Xinhua/Pan Cheng)

Photo taken on March 26, 2019 shows the scenery of Shitan Village of Shexian County, east China's Anhui Province. (Xinhua/Shi Guangde)