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. (Photos: Xinhua)

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.

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.

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.

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

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

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

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.

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.

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.