It is winter. It's really cold and sometimes snowing! :)
snowy in the north and warm in the south
Germany
China is a big country and the climate varies from very cold to tropical so it depends on where you are at Christmas
I live in Germany and they celabrate christmas like crazy
cold and rainy
In Germany it is customary to open Christmas presents on Christmas Eve.
Mostly dry and cool, somewhere around 0 degrees C all the time, with occasional rain and frost during nighttime. By the time of Christmas it usually is snowing.
Cold and rainy.
The climate never changes
Deer are a traditional Christmas animal in Germany.
Christmas in Belgium is festive, there are Christmas Markets and Bazaars. If you can stand a roadtrip then go see the christmas markets in Germany. Not to mention the Snow!
The link below is to a website that shows the climate history of Frankfurt as far back as 1934.