 Before the jetties were built between Dongyin and Xiyin (Siyin), Dongao was one of the important transportation hubs on Xiyin (Siyin).Lack of vast tidal flats in Dongyin, the pebble beach in Dongao is one of few ports that give easy access to the sea.It’s the best spot to enjoy the sights of coastal landforms, such as sea arches, sea gulfs, cliffs, and wave-cut platforms.