I was open at ZBAA, and while we know confusion runs rampant when both runways are green, this was actually a scenario where one end should have been red.
Note that the METAR wind is provided in meters per second, rather than knots.
4 mps actually translates into a little under 8 knots (7.75), so the southbound runways should have been green but the northbound red.
This improper decoding may actually lead to cofusion with inattentive controllers as well as pilots if it is inappropriately translated into the incorrect wind unit.
I know some of the pilots thought I was simply being spiteful, but…