Having done a lot of flying around Asia as SLF, I must say that CX cabin staff are some of the best I have experienced at keeping the emergency exits clear of baggage, and they also do it very politely too.
On a recent flight with a chinese airline (I think it was China Northeastern, but can't remember) there was a card in the seat pocket of the emergency exit seats giving various rules that you had to read, such as being able bodied, willing to assist in the vent of emergency evacuation, etc., and telling you to request a move to another seat if you couldn't comply.
As to the comment about the amount of baggage, I would concur. I have seen no end of boxes, cartons, etc, humped on board some ASian airlines.