青藏高原的多砂石地表上诞生瘦高云，有短时强降水；河谷湖泊湿地诞生胖矮云，有较长时间的小雨。（In Tibetan Plateau, there're two types of clouds: Thin-and-tall clouds from the gravelly-and-sandy ground, causing short-term intensive rainfall; Plump-and-short clouds from the river valleys, lakes and wetlands, causing long-term mild rainfall）