I'm thinking of cancelling my trip to china for new years with my gf.
Why do you want to cancel your New Years plans?
Her plans for New Years seem more fun than mine and I'm not feel sure about New Years.
It's great that you are open to compromise on the plans that you both have for New Years. It's always good to consider the feelings of your partner.
I didn't really care about that, and I don't really like my other plans.
It's good that you care about her feelings like that. Though I suggest you talk to her before cancelling.