Was going to say that some ppl are machmir the whole year lest they forget on layl nittel.I do believe that Chinese minhag is on 25th, with a remez from facts that one local Chinese place had 3 hour wait last night, and another stopped taking orders.I dont know where you are located, although fairlawn stopped taking orders after 6pm. Teaneck was 3+ hour wait and Passaic was 1+ hour wait. What ever happened to a nice home cooked meal.
I never heard of this Jews eating Chinese food on Christmas day thing.Reason? Are they the only ones open?
https://www.vox.com/the-goods/2018/12/21/18151903/history-jews-chinese-food-christmas-kosher-american