It's grim up north!

Don't worry, simply either bring your expensive North Face life saving, compass wielding, inflatable 'I'm a tourist' overcoat....
...or if you'll stay a whole winter, buy local thermals for 30-100RMB a scarf, 2 pairs of gloves 2 pairs of socks and a thick hat, all for much less, it'll take some getting used to the feeling of 2 pairs of trousers but 9 million locals can't be wrong!

One teacher in my old office has the record, 4 pairs of leggings last winter! And it was a he!