Kindergarten is over-rated in HK...that's my opinion personally. I have friends that put their kids in two schools, one in the morning and one in the afternoon, in order to "save a spot". They eat lunch in the car, so how sane is that? But its not for me to judge either. I'm sure most of us sat around till we were 4-years old and we turned out alright. Do what you feel is best for your child. What suits one family, may not suit another. If you were back in UK/US/Oz, I am certain more than half the kids aren't at Kindergarten at 2-years old. Parents end up putting their kids in "day-care" because of work, but there are tons of activities you can also attend with your child and I'm certain he/she will learn a lot more through those activities. Does anyone actually remember their days at Kindergarten..???
I didn't go to kindergarten in HK but I do remember my days there--they were great. Of course, my teacher had a pet snake in a cage in the classroom as well as taratulas and lizards and fish. She did face painting on our birthdays and we made a quilt together and dressed up in Japanese clothing and went to the vet clinic on a field trip. It was a good time. Still in contact with my kindergarten teacher as well--she messaged me this past week. Not sure if HK is quite the same.