贵州省苗族侗族自治州地处崇山峻岭中,境内既有春夏秋冬四季分明的区域气候,也有四季常绿、鲜花不断的亚热带景观。然而,这33个民族、400余万人口聚居的16个县市、30000多平方公里的土地上,仅有四级标准国道400余公里、等外级和少数四级省道800多 Guizhou Province Miao and Dong Autonomous Prefecture is located in the mountains, the territory of both seasons spring and summer, four seasons distinct regional climate, there are four seasons evergreen, flowers constantly subtropical landscape. However, these 33 ethnic groups have more than 4 million inhabitants in 16 counties and cities. Over 30000 square kilometers of land, there are only 400 km of Grade IV national highways, and more than 800 of the outer and minority four-level provincial highways