A villager serves water for guests in Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Chen Bin)

A villager serves dishes for guests in Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Chen Bin)

Tourists visit a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Zhao Dingzhe)

Tourists visit an ecological science gallery at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Zhao Dingzhe)

Aerial photo taken on Aug. 13, 2019 shows a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Chen Bin)

Tourists visit a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Zhao Dingzhe)

Tourists pose for a photo at a tent scenic spot in Gaxiu village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Wang Huajuan)

Tourists pose for a photo at a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Ma Jing)

Tourists ride horses on the prairies of Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Zhao Dingzhe)

Tourists are seen at a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Zhao Dingzhe)

A staff member tidies a room of a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Zhao Dingzhe)

A staff member prepares to tidy rooms of a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province, Aug. 13, 2019. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Ma Jing)

Aerial photo taken on Aug. 13, 2019 shows a tent scenic spot at Gaxiu Village of Gahai Township, Luqu County, Gannan Tibetan Autonomous Prefecture, northwest China's Gansu Province. In recent years, Gannan promoted culture and tourism industry to boost income of local people. (Xinhua/Chen Bin)