Aerial photo taken on Oct. 25, 2020 shows the autumn scenery of Huaxi National City Wetland Park in Guiyang, capital of southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on Oct. 24, 2020 shows the autumn scenery of Huaxi National City Wetland Park in Guiyang, capital of southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on Oct. 24, 2020 shows the autumn scenery of Huaxi National City Wetland Park in Guiyang, capital of southwest China's Guizhou Province. (Xinhua/Tao Liang)

Tourists enjoy autumn scenery at Huaxi National City Wetland Park in Guiyang, capital of southwest China's Guizhou Province, Oct. 25, 2020. (Xinhua/Tao Liang)

Tourists enjoy autumn scenery at Huaxi National City Wetland Park in Guiyang, capital of southwest China's Guizhou Province, Oct. 25, 2020. (Xinhua/Tao Liang)

Aerial photo taken on Oct. 24, 2020 shows the autumn scenery of Huaxi National City Wetland Park in Guiyang, capital of southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on Oct. 25, 2020 shows the autumn scenery of Huaxi National City Wetland Park in Guiyang, capital of southwest China's Guizhou Province. (Xinhua/Tao Liang)