I only celebrate the Russian new year because I'm a stinky Soviet commie.
Jk I also celebrate Christmas too. I'll elaborate later if need be, since I'm at work atm.
Here in Hong Kong, we don't do anything for Western new year, so winter solstice is more important than Christmas, unless you are Christian.
But for many Christians, winter solstice is still more important than Christmas.
Winter solstice is basically hot pot day and family reunion. Nearly everyone does the same thing.
Christmas is not a tradition here, so every family does it differently, but most people do join in the fun.
Most people would have some sort of "big Christmas meal" offered in restaurants. Spare ribs are a popular main dish because most Cantonese people don't like turkey. (We find the turkey meat very rough and would prefer more tender meat)
A lot of people will go to watch drama/ plays by local churches... even when they aren't Christian, because the dramas are free of charge, and people love free stuff.
Oh, one strange unique thing in Hong Kong about Christmas-- most people go to the Victoria Harbor on Star Ferry to see the Christmas decorations of the commercial buildings around the harbor.
Buildings from both sides of the harbor will have Christmas lights on the body of the building to celebrate Christmas.
You can put really really Christian messages on your decoration without problems-- no one really hates Christians apart from some homosexual people.
Freedom of religion works in favor of Christians here, because Christians only make up to about 11.8% of the population, with 5% being Catholic.
Most Christians here don't act like dicks or social justice warriors anyway.