During the Spring Festival holiday, as the temperature gradually rises, the ice melts and river runs in the Yellow River Hukou Waterfall, reproducing the spectacle of rainbow reaching the sky. In good sunny days, the thawy Yellow River water flowing down into the Great River Channel reaching ten miles far, splashes up the water spray, which forms a rainbow reaching the sky under the sunlight, adding a unique scenery for the holiday. (Photo by Correspondent Huo Yong)