Maybe you don't know much about Canada's current visa policy, even if you have a one-year work visa. You don't need to get a three-year work permit. More importantly, if you get LMO.
To study in Canada 1 year, you must first apply for PGWP (that is, a one-year work permit). At this time, you need to ask your employer to open LMO for you (this is the employment approval submitted by the employer to the human resources department), and you can meet the occupation list of NOCAB after working for one year. This list is a list of early immigrants in Canada. Basically, you are all employees.
For example, in the Toronto area or the area where you think there are many people in China, employers can't select enough people, so they can't provide you with LMO, and it's useless for you to learn it. I suggest you go to a city where China people are not very concentrated to study this one-year major. Immigration is relatively easy. Save yourself time ~ ~