Unfortunately, Canada does not have a Tax Treaty with Hong Kong. The Treaty between Canada and P.R. China does not cover Hong Kong either as Hong Kong is a separate jurisdiction. As a result, you can not take advantage of treaty benefit to be deemed to be a non-resident of Canada.
Under the Canadain tax law, you will be considered a resident for tax purpose because your wife and kids are so-called "significant ties" with Canada. Therefore, you need to claim your global income on your Canadian return and claim foreign tax credit for the taxes you paid to Hong Kong.
Under the Canadain tax law, you will be considered a resident for tax purpose because your wife and kids are so-called "significant ties" with Canada. Therefore, you need to claim your global income on your Canadian return and claim foreign tax credit for the taxes you paid to Hong Kong.