Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on March 26, 2020 shows the spring scenery of Bomi County, Nyingchi of southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)