Autumn brings awesome scenery to the Yellow River estuary where the Yellow River, China's second-longest river, joins the Bohai Sea in Dongying, east China's Shandong Province, Oct. 17, 2022. (Photo: China News Service/Yang Bin)

Red-crowned cranes forage at the Yellow River estuary where the Yellow River, China's second-longest river, joins the Bohai Sea in Dongying, east China's Shandong Province, Oct. 17, 2022. (Photo: China News Service/Yang Bin)

A flock of oriental white storks at the estuary of the Yellow River where the Yellow River, China's second-longest river, joins the Bohai Sea in Dongying, east China's Shandong Province, Oct. 17, 2022.

Miscanthus sacchariflorus at the Yellow River estuary where the Yellow River, China's second-longest river, joins the Bohai Sea in Dongying, east China's Shandong Province, Oct. 17, 2022. (Photo: China News Service/Yang Bin)

The tidal-flat presents a tree-shaped landscape at the Yellow River estuary where the Yellow River, China's second-longest river, joins the Bohai Sea in Dongying, east China's Shandong Province, Oct. 17, 2022. (Photo: China News Service/Yang Bin)

The tidal-flat presents a tree-shaped landscape at the Yellow River estuary where the Yellow River, China's second-longest river, joins the Bohai Sea in Dongying, east China's Shandong Province, Oct. 17, 2022. (Photo: China News Service/Yang Bin)

The tidal-flat presents a tree-shaped landscape at the Yellow River estuary where the Yellow River, China's second-longest river, joins the Bohai Sea in Dongying, east China's Shandong Province, Oct. 17, 2022. (Photo: China News Service/Yang Bin)