Introduction to Laoyehai: Hidden among the rolling mountains of Dongao, with an area of ​​5 square kilometers and a coastline of 10 kilometers, it is an important inland sea port in Wanning City. As a natural and excellent harbor, the coast is surrounded by coconut trees and beautiful scenery, and the vast mangroves create a beautiful ecological picture. Every winter, tens of thousands of migratory birds come to this natural mangrove to rest and overwinter, bringing cruisers the magnificent scene of "the sunset, thousands of birds flying together, and the sea water becoming the same color as the sky."