As Erlong Temple, located near HaiTzuKuo in southern Liuqiu, stands in the middle of sightseeing route around Liuqiu, many tourists stop here to take a rest and watch the magnificent coastal coral reefs. In front of Erlong Temple is an open space close to the shore where you can see the area around very well. Many big collapsed coral reefs and limestone heaped under the cliff. This proves that the coast is still being eroded by the sea and its configuration is changing little by little. The coastal cliffs move back as a result of their lower part worn away by the sea and collapsing little by little. The authority set up measuring equipment for outdoor teaching In the open space before Erlong Temple,