Your PM status might have helped more than my lowly SM. I used to fly CZ almost monthly when I lived in China, but CZ wasn't in the SkyTeam Alliance at that time, so no miles. On these recent flights, Z was great (only two others, my wife, and myself in the 4-row, 24-person Z section; good service from the FAs. I only fly to China a couple of times a year now, but I like CZ.