Covering an area of around 127 hectares, the Tiaozini wetland is an essential stopover halfway along the East Asia–Australasia Flyway, welcoming millions of migratory birds every year. In 2019, it was included as part of a UNESCO World Heritage Site-the Migratory Bird Sanctuaries along the Coast of Yellow Sea-Bohai Gulf of China (Phase I).

"The number of Nordman's greenshank observed here has increased to 1,221 in 2022 from less than 600 years ago. Every year, nearly half of the world's currently existing 600-some spoon-billed sandpipers would spend three months feeding, molting and resting at the mudflat," said Lyu.

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