The history of Hong Kong cannot be separated from the sea.From the development of the waterfront to the Chinese people's passion for swimming, swimming groups have been established and Hong Kong people have participated in swimming competitions. Besides witnessing the development of swimming in Hong Kong, we can also see that Hong Kong society and its concept of the nation have slowly changed.The effect of swimming is also like water splashing in all directions. It not only changes the public's perception of displaying the body, but even reflects the changes in Hong Kong society and its history from the development of Repulse Bay.The book talks about swimming, but not just swimming.From the construction of the bathing beach to each advocate and swimmer involved in the sport - swimming, it is an interesting research topic and also a lively trace that everyone goes across the water surface.