Chinese medical experts share their experience in COVID-19 prevention, control and treatment with their Lao counterparts in Vientiane, Laos, March 30, 2020.

Photo taken on April 1, 2020 shows peach blossoms along the Yarlung Zangbo River Grand Canyon, known as the world's deepest canyon, in southwest China's Tibet Autonomous Region.

Aerial photo taken on April 1, 2020 shows a boat sailing in the Xixi National Wetland Park in Hangzhou, east China's Zhejiang Province.

Aerial photo taken on March 31, 2020 shows tea-picking workers harvesting tea leaves at a tea garden in Wudaoling Village of Yunyang District in Shiyan, central China's Hubei Province.

Giant panda "Yuan Yuan" plays at the Qinling research center of giant panda breeding in northwest China's Shaanxi Province on March 31, 2020. In 2019, three giant panda cubs "Jia Jia", "Yuan Yuan" and "Qin Kuer" were born in the Qinling research center of giant panda breeding. The three giant pandas grew up healthily with the care of the staff.

Medical workers attend a welcome ceremony at Xi'an Xianyang International Airport in northwest China's Shaanxi Province, March 31, 2020. A batch of 267 medical workers returned to Shaanxi on Tuesday after aiding the fight against the COVID-19 in central China's Hubei Province.