The Han people can be found throughout the country, though mainly on the middle and lower reaches of the Yellow River, the Yangtze River and the Pearl River valleys, and the Northeast Plain.
汉族人分散在全国各地，但主要聚集在黄河中下游地区，长江流域、珠江流域和东北平原。
The seasonal changes of AOT are obviously in south Xinjiang Basin and middle-west region of Inner Mongolia, but not obviously in Sichuan Basin and the lower reaches of Yangzi river and Yellow river.
南疆盆地和内蒙古中东部地区AOT值随季节变化明显，而四川盆地、长江黄河下游地区AOT值没有明显的季节变化。
While in the lower and middle reaches of the Yellow River, the average time of the first snow is in the Minor snow solar term.
但是在黄河中下游地区，初雪的平均时间是在小雪这个节气。
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