A vendor arranges vegetables at Yaowangshan Farm Product Market in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 29, 2019. Through the cultivation of modern agriculture, vegetables are no more rarities on the "roof of the world," making today's Tibetan tables more delicious, nutritious. (Xinhua/Zhou Jinshuai)

An employee sorts eggs at a chicken farm in Lnaze County of Xigaze City, southwest China's Tibet Autonomous Region, Aug. 1, 2020. Through the cultivation of modern agriculture, vegetables are no more rarities on the "roof of the world," making today's Tibetan tables more delicious, nutritious. (Xinhua/Zhan Yan)

A farmer fertilizes eggplant seedlings in a green house in Nyingchi City, southwest China's Tibet Autonomous Region, March 22, 2020. Through the cultivation of modern agriculture, vegetables are no more rarities on the "roof of the world," making today's Tibetan tables more delicious, nutritious. (Xinhua/Zhang Rufeng)

A vendor arranges vegetables at a farm product market in Dengqen County of Qamdo City, southwest China's Tibet Autonomous Region, Sept. 18, 2020. Through the cultivation of modern agriculture, vegetables are no more rarities on the "roof of the world," making today's Tibetan tables more delicious, nutritious. (Xinhua/Zhan Yan)

Aerial photo taken on May 7, 2020 shows greenhouses in Zongang County of Qamdo City, southwest China's Tibet Autonomous Region. Through the cultivation of modern agriculture, vegetables are no more rarities on the "roof of the world," making today's Tibetan tables more delicious, nutritious. (Xinhua/Zhan Yan)