Laotie Mountain, located at the southernmost of Liaodong Peninsula, stretches into Bohai Sea and Yellow Sea, forming a natural dividing line between the two whose water is in a sharp contrast. The water of east Yellow sea is in deep blue, while the water of west Bohai sea is muddy and in faint yellow. Bushes and arbor forests on Laotie Mountain is an ideal stopover for migrating birds, known as the “birds’ inn”. As a natural wonder, the dividing line between Bohai Sea and Yellow Sea in Lyushun, Dalian attracts many visitors every year.