David Hockney painting in "Stay With Me"

In Episode 12, about 30:47 into the episode you see that there is a poster of a David Hockney painting on the wall. It is "Portrait of an Artists (Pool with Two Figures). It is one of his most famous pool paintings.

I really doubt that everyday working class Chinese would have such a painting on the wall. I think that the producers put it in as an “Easter Egg” and have a sense of humor.