The River in the Mountain is a fairy tale with vivid characters. This paper describes the river from carefree happiness at first to unhappiness when encountering difficulties, and finally gets real happiness with the help of mountains, springs and waterfalls. The article uses a variety of descriptive techniques, and the description of language, expression and action makes the characters very vivid. Let the students realize that the river has become brave and strong because of making friends with waterfalls and springs, and has gained real happiness. The river at the beginning of the article, although happy, is also lonely, unprepared for difficulties and not strong enough. At the end of the article, the river became brave and strong with the encouragement of mountains, springs and waterfalls.