Why do you say "Yunnan" is "the south of colorful clouds"?

Yunnan, which is famous for its beauty, richness and magic, has always been called the "mysterious land" by the outside world, attracting tourists from all over the world. Beautiful and rich Yunnan is a treasure in the southwest frontier of the motherland. With vast land, magnificent mountains and rivers and rich resources, it is one of the birthplaces of the Chinese nation. As early as 1.7 million years ago, Yuanmou people flourished here. This is an important passage and port of the ancient "Southern Silk Road" in China. Tracing back to the historical story of "the south of colorful clouds": "the south of colorful clouds" is the laudatory name of Yunnan Province. It can be said that among the names of more than 30 provincial administrative regions in China, none can be compared with the name "Yunnan", which is full of graceful poetry and intriguing. Not to mention Yunnan's beautiful natural scenery, numerous scenic spots and historical sites, colorful products, colorful ethnic customs, profound local history and culture, "Yunnan", "south of clouds" and "south of colorful clouds", all of which are desirable and fascinating. But in fact, the wonderful word "Yunnan" did not appear as a province name at first, but as a county name. "Yunnan Tongzhi" contains: "During the Hanwu period, colorful clouds were seen in the south of China, and the name of Yunnan began here." "Nanzhao unofficial history" also contains: "Caiyun is now in Longxinghe Township, and the county is south of Caiyun, hence the name Yunnan." This county named "Cai Yunnan" is located in Xiangyun County, the gateway of western Yunnan. It has been more than 2 100 years since Emperor Wu of the Han Dynasty built Yunnan County in Yunnanyi Town, Xiangyun County. In the meantime, in the third year of Jianxing, Shu Han changed to Yunnan County; During the Nanzhao Dali Kingdom, Yunnan Festival was established; In the first year, Yunnan was established as a book province. At this point, "Yunnan" officially became the name of the provincial division. It can be seen that "Yunnan" is also the longest-used name among more than 30 provincial administrative divisions in China. What is particularly interesting is that "Yunnan" is her poetic nickname, no matter what administrative division name appears, "South of Colorful Clouds" or "South of Colorful Clouds". It is this poetic nickname that vividly summarizes and vividly shows the beauty, richness, magic and color of Yunnan and expands its popularity in the country and even the world.