From a non-astrological point of view it could make sense for you to move back to hongkong, since, i assume, you have friends and relatives to support you financially and psychologically.

This is preferred to staying back in canada at the mercy of your ex-husband who apparently do not seems to have you and your son interests at heart.

What is the possibility of taking legal action against him, since, by law he is obliged to provide financial support to his child.

Growth in Asia is multifold compared to the west, especially with China's extraordinary industrial growth support.

You need to provide us with your full birthday and time. In western calenda is fine. I might not be able to help you but others could.

Blessings,
Choon