What is immigration supervision? How long is Canada?

It is the cumulative time you must stay in the destination country within the specified number of years, which is 3 years in Canada.

The best way is to be hired by a Canadian company, and the company sends you to work in China, so your working time in China can also be accumulated. This kind of opportunity is what all immigrants expect.

Most people just stay in Canada, consolidate their language first, then take exams, study and work, so that they can apply for naturalization and survive these three years.

This kind of life is virtually restricted by freedom, as if being put in prison, so it is called immigration supervision.