醉看墨花月白 恍疑雪满前村
Since China is a vast territory, the temperature difference between the north and south is great. Meteorologists defined winter as the period with an average temperature below 10℃ for five continuous days.
Lidong always falls in November. When it begins to snow in north China, and the average temperature in most areas of Qinghai-Tibetan Plateau, Inner Mongolia and Heilongjiang Province could be lower than -10℃, the southern part of the country is still quite warm, with an average temperature between 12℃ and 15℃. The temperature difference between the northernmost city and the southernmost city could be more than 30℃.
When snow appears in north China, it mainly rains in the south. For instance, the rainfall in Sichuan Basin, southern Guizhou and southwestern Yunnan could reach 50mm or more. Yunan Province is warm in sunny days and cold in rainy days, as an old saying goes, "It's like spring all the year round, but turns to winter once rain comes."
