Under HKG law one can not bond an employee. I have heard that 9 cadets have quit in the last 2 months. After profit share I expect more to jump (good on them!).
So as a work around company propose a 'forgivable loan' of approx HKD1mill. Each cadet 'spends' some of this loan for training. No experience - spend it all, Advanced Entry training they spend HKD500,00 or so, and Transition Training spend HKD200,00 approx. Cadet gets to hold on to the balance. After 6 years service the forgivable loan will have been 'repaid'.
So, yet again, CX management are trying to get around HKG law. I hope this is challenged.
If you want to retain staff, reward them. Don't use mafia tactics.