The water of Xin'an River, green and clear, pure and soft, no matter the depth, it is clear to the bottom; no matter spring and winter, it is as clean as a mirror. The Xin'anjiang Hydropower Station was completed in 1965, and the 105-meter dam caused the "mountain to lose height, peak to form an island", forming a large reservoir of 17.8 billion cubic meters of water, called "Dry Island Lake". When the cold lake water from the dam under the gate dumped out, the average water temperature of the river more than 10 kilometers under the dam is about 15 degrees Celsius. In the early morning or dusk, the water temperature of the river and the temperature have a large temperature difference, and it will condense into water vapor and form a thick fog. Often the temperature difference is bigger, the more dreamy and beautiful this fog scene. Xin'an River has three "water to clear, wind to cool, fog to wonder". Baisha Qiwu", people call it the soul of Xin'an River. Wake up from sleep in the morning, surrounded by silence, as if still sleeping in a dream. Thinking of the "qi fog" of Xin'an River, the sky was just bright and bright, strolling on the edge of the Baisha Bridge across the Xin'an River, the cool breeze came rushing to my face. Warm and fresh, heart-warming card. In the slight morning light, I looked through the railing, the river heart is foggy, a cluster of white and soft fog, like clouds, like yarn, close to the dark green crystal water surface, slowly floating and diffuse, and gradually gathered into a milky white "fog curtain screen", Vague and solid, floating, spread on the river, the wide river seems to be cut into pieces, a section, Yingying green water and white mist intersect, beautiful and moving.