A rider competes during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Purbu Zhaxi)

A rider competes during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Jigme Dorje)

A rider competes during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Sun Ruibo)

A rider competes during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Sun Ruibo)

A rider competes during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Sun Ruibo)

A rider competes during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Sun Fei)

A rider competes during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Jigme Dorje)

Aerial photo shows a rider competing during a horse race in Gangdan Village of Gonggar County, southwest China's Tibet Autonomous Region, Aug. 26, 2021. An annual horse racing event was held here on Thursday to celebrate the upcoming harvest season. (Xinhua/Purbu Zhaxi)