Any reality on this?
http://gochina.about.com/od/weather/p/Dec_in_China.htm
December Packing Suggestions:
Layers are essential for packing in winter weather.
•North: it will be cold during the day and below freezing at night. You'll probably be thankful if you bring along a light pair of long underwear, a fleece and a wind-proof or down jacket.
•Central: it will be quite chilly during the day and cooler at night, but rarely freezing. A heavy base layer (e.g. jeans, boots and sweaters) along with a rain/wind-proof jacket will be enough.
•South: it will still be relatively warm. Late fall dressing is fine but bring something lightweight for the occasional cool evening and rainy day.
Visiting China in December - Pros:
•There aren't any national holidays in December and people are working hard leading up to Chinese New Year (Jan/Feb) so China's top attractions won't be as crowded as in peak times.
•Dry weather in Beijing and the rest of northern China makes for cold, but almost-guaranteed dry sight-seeing.
•Mild weather in central and south China is comfortable for sight-seeing and touring.
Visiting China in December - Cons:
It's cold! Cold but dry in the north, cold and damp across central China.