The international Horticultural Expo 2019 will be held in the beautiful county of Yanqing, Beijing. Yanqing enjoys both natural and artificial wonders, the Yanshan Mountain and the Great Wall of China. The logo showcases six colorful flower petals swaying around the Great Wall, which vividly illustrates the theme: "International Horticultural Exposition under the Great Wall." The three-colored, six-petal peace flowers bear the traditional Chinese philosophical theory of "the six direction," implying heaven and universe. We adopted overlapping and gradient features.