Retain Canadian permanent resident status

I once asked the people in the Immigration Department about this question. As long as you are not in Canada, even if you work in an overseas branch of a Canadian company, you can't apply for citizenship without staying for three years in four years. At that time, someone at the Immigration Bureau gave me an example. If a non-Canadian flight attendant works for Air Canada, when the flight attendant is arranged to fly an international flight, her absence in Canada will be deducted from her three-year and four-year stay. The Canadian company you are looking for in China can never guarantee your resident status. I think the only way to keep your resident status is to find a company in Canada, and then the company will send you to China. But you'd better ask immigration.