Introduction to Half Moon Bay: Half Moon Bay, also known as Moon Bay, was called Beikou in ancient times. It is located in the northern part of Beichangshan Island and is about 1 km long. It is like a crescent moon, stretching against the mountains and lying on the water. The mountains are dripping green and the sea water is It is green and the ball stones are colorful. In the late 1950s, the garrison built a shooting range here and named it Half Moon Bay according to the shape of the bay. In 1979, Ye Jianying came here as vice president and wrote a seven-character quatrain for the bay: "In the Crescent Bay of Changshan Island, there are hard-working fishermen and farmers working in stone fields. The expensive stone balls produce brilliant colors. Women and children are not willing to have hard fingers." Therefore, it is also called Crescent Bay.