[Fido969]

I grew up in a Jewish community, and the Chinese restaurants were always packed on Christmas and New Years. I don’t know why it became such a tradition, but it did. That and after the fasting days.

[M1903A1]

Explanation I’d always heard was that Chinese places were commonly all that was open on those days.

[SJackson]

I grew up in a Jewish community, and the Chinese restaurants were always packed on Christmas and New Years

Because they're open.