Introduction to Gupo Island: Gupo Island covers an area of about 0.3 square kilometers. It is the largest uninhabited island in the North Sea among the Penghu Islands. There is a green prairie on the island, and a white beach and rocky shore on one side. Tourists can enjoy it here. Have fun splashing in the shallows and watching beautiful corals and tropical fish. In addition, Gupo Island is also one of the famous seaweed production areas with large output and high quality. It is currently the public property of Chikan Village and is planned by the management committee. During the harvest season every winter, the villagers charter a boat to go there, which is an unprecedented event. It is a unique common activity in Beihai for hundreds of years. This uninhabited island is home to many birds, especially terns, such as white-browed terns, red terns, etc., which attract the attention of bird watchers.