Haikou is a green park worth visiting. It is full of oxygen and not hot. There is a crater in it. It is said that the crater has a history of more than 8000 years. The surrounding scenery is very attractive. At first glance, it is a natural heritage park. Although it is small, it is beautiful and green. Inside, you can see the living conditions of the ancient people living near the volcanic eruption site, and their living tools. Standing at the commanding height of Haikou, you can see the whole picture of Haikou City. There's a snack bar in the break area where you can taste the coconut. I heard the locals say you need to choose the Yellow coconut. It's too tender and more sour. The slightly older coconut tastes delicate and fragrant. Don't be too old. Just let your boss choose it for you.