VFE
Did you read my post #63? You can’t work for anyone else in HK until you have HK permanent residency which takes a minimum of seven years. Self employment is a little different but it takes significant amounts of capital, something most international cadets will be greatly lacking due no housing assistance and the setup costs of establishing a home in HK, i.e. furniture, 2-4 months rental bond, utilities bonds etc.
If you do go into business for yourself while in the employ of CX and it doesn’t workout you do need to realise that bankruptcy will also cost you your job at CX. CX regards bankruptcy as an instantly dismissible offence.