"Chinaman" hasn't been the preferred nomenclature since at least 1998 (when The Big Lebowsky came out). Here, as others have noted, it's China man, though.

> The chinaman is not the issue here, Dude. I'm talking about drawing a line in the sand, Dude. Across this line, you DO NOT... Also, Dude, chinaman is not the preferred nomenclature.

https://www.imdb.com/title/tt0118715/quotes

https://www.youtube.com/watch?v=OYOzUHnPJvU