Aerial photo taken on Feb. 28, 2021 shows cars running past Bauhinia blossoms along Xueyuan road in Liuzhou City, south China's Guangxi Zhuang Autonomous Region. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows Bauhinia flowers blooming at Liuhou Park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows cars running past Bauhinia blossoms along Xueyuan road in Liuzhou City, south China's Guangxi Zhuang Autonomous Region. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows Bauhinia flowers blooming at Liuhou Park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region. [Photo/Xinhua]

Photo taken on Feb. 24, 2021 shows the scenery of Hani terraced fields in Yuanyang County of Honghe Hani and Yi Autonomous Prefecture, southwest China's Yunnan Province. [Photo/Xinhua]

Aerial photo taken on Feb. 24, 2021 shows the scenery of Hani terraced fields in Yuanyang County of Honghe Hani and Yi Autonomous Prefecture, southwest China's Yunnan Province. [Photo/Xinhua]

Aerial photo taken on Feb. 24, 2021 shows the scenery of Hani terraced fields in Yuanyang County of Honghe Hani and Yi Autonomous Prefecture, southwest China's Yunnan Province. [Photo/Xinhua]

Aerial photo taken on Feb. 24, 2021 shows the scenery of Hani terraced fields in Yuanyang County of Honghe Hani and Yi Autonomous Prefecture, southwest China's Yunnan Province. [Photo/Xinhua]

Aerial photo shows a train running on Nanpan River Railway Bridge along the Nanning-Kunming Railway, Feb. 24, 2021. [Photo/Xinhua]

Aerial photo shows a train running on Nanpan River Railway Bridge along the Nanning-Kunming Railway, Feb. 24, 2021. [Photo/Xinhua]

Aerial photo shows a train runnning on an overpass near Ceheng Station along the Nanning-Kunming Railway, Feb. 26, 2021. [Photo/Xinhua]

Photo taken on Feb. 28, 2021 shows scenery of Nanhu park in Nanning, south China's Guangxi Zhuang Autonomous Region. [Photo/Xinhua]

Photo taken on Feb. 28, 2021 shows scenery of Nanhu park in Nanning, south China's Guangxi Zhuang Autonomous Region. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows the view of a highway in Jingning She Autonomous County in east China's Zhejiang Province. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows the view of a highway in Jingning She Autonomous County in east China's Zhejiang Province. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows the view of a highway in Jingning She Autonomous County in east China's Zhejiang Province. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows the snow covered view of Chongli District in Zhangjiakou, north China's Hebei Province. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows the National Ski Jumping Center in Chongli District of Zhangjiakou City, north China's Hebei Province. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows the National Ski Jumping Center in Chongli District of Zhangjiakou City, north China's Hebei Province. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows the snow covered Zhangjiakou competition zone of the 2022 Beijing Winter Olympic Games in Zhangjiakou, north China's Hebei province. [Photo/Xinhua]

A tourist poses for photos in blooming cole flowers in Liyan Village of Gaoping Town, Guanghan City of southwest China's Sichuan Province, Feb. 27, 2021. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows people enjoying the spring scenery in Liyan Village of Gaoping Town, Guanghan City of southwest China's Sichuan Province. [Photo/Xinhua]

Aerial photo taken on Feb. 28, 2021 shows people enjoying the spring scenery in Liyan Village of Gaoping Town, Guanghan City of southwest China's Sichuan Province. [Photo/Xinhua]

People enjoy the spring scenery in Liyan Village of Gaoping Town, Guanghan City of southwest China's Sichuan Province, Feb. 28, 2021. [Photo/Xinhua]