Photo taken on July 7, 2020 shows a cole flower field in Zhanang County, Shannan City of southwest China's Tibet Autonomous Region. (Xinhua/Liu Hongming)

Visitors enjoy themselves in a cole flower field in Zhanang County, Shannan City of southwest China's Tibet Autonomous Region, July 7, 2020. (Xinhua/Zhang Rufeng)

Photo taken on July 7, 2020 shows cole flower fields in Zhanang County, Shannan City of southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on July 7, 2020 shows cole flower fields in Zhanang County, Shannan City of southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)