Can I change my identity in Canada?

Of course it's possible. As long as you can find a company that is willing to hire you, or find an affiliated company run by a China person who is willing to give you a work certificate, and you have worked for one year and paid taxes legally, you can change it into a legal work permit and apply for experienced immigration. This is a general immigration policy. If you work in Alberta, Oman and other provinces with loose immigration policies for half a year, you can apply for immigration.

Or apply for a local college and change to a student visa. Two-year full-time higher education can automatically obtain a three-year work visa, which is also applicable to the experience immigration policy of working for one year.