Hong Kong ATC simply say holding required, hold at Betty EFC 15, reduce speed as required if you wish. They don't give crossing times.
Then later on when you are in the hold they may advise a time to cross Mango but they invariably break you out of the hold at a required speed for radar vectors towards Mango anyway.......
They too slow you down speed you up and then slow you down again.
I remember going into Singapore years ago and being delayed around FL200 north of Nylon. Aircraft were being vectored for delaying tactics all over the shop, we passed just above the same QF 744. ( QF10 I think? ) 3 times 3 different directions!! It was a mess and thank goodness their Radar didn't fail......
I much prefer London sending you into the LAM hold, it's more orderly.