Aerial photo taken on Aug. 13, 2018 shows a Tibetan village in Letong Town in Litang County, southwest China's Sichuan Province. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

Photo taken on Aug. 13, 2018 shows an ancient house in Letong Town in Litang County, southwest China's Sichuan Province. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

A man draws a Thangka painting in Letong Town in Litang County, southwest China's Sichuan Province, Aug. 13, 2018. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

Tibetan women make embroidery in Letong Town in Litang County, southwest China's Sichuan Province, Aug. 13, 2018. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

People visit an ancient street in Letong Town in Litang County, southwest China's Sichuan Province, Aug. 13, 2018. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

People visit an ancient street in Letong Town in Litang County, southwest China's Sichuan Province, Aug. 13, 2018. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

Photo taken on Aug. 13, 2018 shows the interior of a house of Tibetan ethnic group in Letong Town in Litang County, southwest China's Sichuan Province. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

Artists perform Tibetan opera for visitors in Letong Town in Litang County, southwest China's Sichuan Province, Aug. 12, 2018. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

European visitors enter an ancient house in Letong Town in Litang County, southwest China's Sichuan Province, Aug. 13, 2018. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)

Photo taken on Aug. 13, 2018 shows an ancient street in Letong Town in Litang County, southwest China's Sichuan Province. In recent years, the Litang County has taken on a new look due to reform in its old area and restoration of ancient buildings. (Xinhua/Jiang Hongjing)