At one end of the southern area of Busan, similar to Taizong Platform, sporadic rocky islands grow. Every day, five or six islands will be exposed in different situations with the tide rising or falling, and the name of the five or six islands will come from it. The five islands are Yushuo Island, Eagle Island, Cone Island, Oyster Island and Lighthouse Island, among which Yushuo Island is also called Shield Island and Songdao Island. The lower part of the two islands is almost connected. At high tide, it looks like an island, and at low tide, it becomes two islands. Wuliu Island is the only place for all kinds of ships entering Pusan Port, so it is also the symbol of Pusan Port. Cities and oceans, noisy and peaceful, floating in the world, looking for quiet places. The sky is bleak, the sea is flat but comfortable, the sea breeze is cold, but the heart is still calm.