Under NO circumstances would I relocate to HK with a family unless I was offered the following:
1) salary at least 75K mo
2) housing allowance no less than 45K mo
3) full medical coverage (worldwide)
4) 6 weeks leave a year, plus business class travel for all family members to place of domicile twice a year
5) minimum 3 year contract, with gratuity of 2 months/per year payout at end
6) loss of license insurance, and all training costs covered
7) life insurance of at least 5 times yearly salary
That would be the minimum package to make ANY transfer to HK worthwhile. Less than that, don't even consider it.