Can you see the other side of Qiongzhou Strait?

I can't. Qiongzhou Strait is a strait connecting Chinese mainland and Hainan Island, and its narrowest point is about 18km. On a sunny day, standing on the northern coast of Hainan Island, you can't see the other side directly. Because the visible range of the sea is affected by many factors, including atmospheric refraction, sea fog and so on. In addition, the Qiongzhou Strait will be hit by typhoons all the year round, and weather conditions such as typhoons and sea fog will also affect the visual range. So, on the coast of Qiongzhou Strait, you can't see the other side.