南水北调工程主标志以四条向上扩展的线条构成水花状,下部叠压龙型。整个图案庄重大方,具有两层象征意义,一是四条线代表长江、黄河、淮河、海河,龙及其上下两朵祥云代表东、中、西三条调水路线,象征南水北调工程将中华腹地四条江河联系起来,形成宏观调控水资源的巨大能力;二是龙为中华民族的象征,四 The main sign of the South-to-North Water Diversion Project consists of four lines that extend upwards to form a water-spray pattern, and the lower part of the dragon-shaped drag line. The whole design is dignified and generous, with two symbolic meanings. The first four lines represent the Yangtze River, the Yellow River, the Huaihe River, the Haihe River, and the two clouds above and below represent the three eastern, central and western water diversion routes, symbolizing the four rivers in the hinterland of China Linked to form a huge ability to macro-control water resources; Second, the dragon is a symbol of the Chinese nation, four