Photo taken on Oct. 3, 2020 shows the autumn scenery of the Xigou forest farm in Minhe Hui and Tu Autonomous County in Haidong City, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Photo taken on Oct. 3, 2020 shows the autumn scenery of the Xigou forest farm in Minhe Hui and Tu Autonomous County in Haidong City, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Photo taken on Oct. 3, 2020 shows the autumn scenery of the Xigou forest farm in Minhe Hui and Tu Autonomous County in Haidong City, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Photo taken on Oct. 3, 2020 shows the autumn scenery of the Xigou forest farm in Minhe Hui and Tu Autonomous County in Haidong City, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Photo taken on Oct. 3, 2020 shows the autumn scenery of the Xigou forest farm in Minhe Hui and Tu Autonomous County in Haidong City, northwest China's Qinghai Province. (Xinhua/Wu Gang)