Urgent! Canadian immigrants need to stay for a few days for the first time. Can they come back in three days?

1.3 days. As long as you have a plane ticket and a China passport, you don't have to apply to anyone. Note that when the customs asks you how long you plan to stay, you say that the immigrants will stay for a long time, not to mention leaving soon, which saves the boat.

2. the main applicant must land before or at the same time as others, and others only need to ensure that they enter the country within the validity period of the visa. The airport has an isolation area and a processing window for new immigrants to land. Take the number and sit in the chair until your number comes. Go to the window and deal with it

Maybe you are a child. After landing, you can apply for a maple leaf card at the airport and a work card (social security number) the next day, and then you can go back to China to take the exam. Let parents get maple leaf cards and work cards.