CHINA HAS a total land area of 9.6 million square kilometers, straddling tropical and temperate zones from south to north. As a result, difference in temperature is obvious, with a 40 °C margin in...
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CHINA HAS a total land area of 9.6 million square kilometers, straddling tropical and temperate zones from south to north. As a result, difference in temperature is obvious, with a 40 °C margin in...