I encountered the same situation as yours when we went to Chimelong in last June. The room opposite ours just had the door opened since around 6:30am, ppl inside there allowing their friends and families staying in other rooms to come and go easier. Then I went out and asked the man who stood right at the door to close the door, he simply can't make the decision and told her "mum", maybe I think, then that selfish woman just spoke "ng 世理 ku!" Really selfish woman...what a shame, they're HK people, how uncivilized they behaved...
Then I went out again asked that they closed the door, then a young lady who was much more civilized said sorry and closed the door. What a shame, old HK woman..