As 400 J points out, the Second Officer remuneration is totally inadequate as an expatriate package in Hong Kong.
It was never designed to be so. The salary and benefits were designed for local Chinese pilots who had been taken on as cadets, trained at initially Prestwick and then Adelaide, and integrated into the company. CX paid the training, so the salary and benefits were and are low.
Cadets were chosen for a variety of parameters, but single and childless was an unwritten rule of application. It was assumed that they would live at home with their parents. Such is industrial arrogance.
So to arrive with three children and a wife as a second officer is bound to be difficult. Even a partner is a problem as the immigration and labour laws preclude most unions. (Pprune passim.)
I note that a pilot has written to this thread asking about the job with 200 hours. That was the level of experience that the second officer remuneration scheme was designed for. If you have more experience, you are selling yourself short.