I was in Beijing last october and we went to the Badaling ski resort which is less than 1 hour north from the city, but there wasn't any snow yet. It's basically a massive sand dune with snow cannons on it so I don't think the skiing would be that rad.
There's supposed to be better resorts further up north in the country, but it won't be as good as Korea or Japan I think. China is pretty fucking poor.