Late to the party, as usual.
Anyway, "eating Chinese", or "the national food of our people" isn't limited to Christmas. Best place to hold a wake!
There is a joke that I can not fully remember, about a guy eating pork, in a Chinese restaurant. He is seen, through the window, by his Rabbi. The punch line is something along the line that since his ingesting the food was witnessed, by the Rabbi, that made it kosher.
Maybe you have to be Jewish, or Walter Sobchak, to get the joke.
"Three thousand year, of beautiful tradition, from Moses to Sandy Koufax.................."