What if the household registration has not been cancelled after emigrating to Singapore?

If you join a foreigner, you must cancel your household registration, otherwise it will be difficult to apply for a visa in the future, and Singapore does not recognize dual nationality, so you can't have your original nationality on the day you join.

If you only live permanently, there is no big problem if you don't cancel it.

Immigrants must find out whether their original household registration has been cancelled. If not, they must go to their original place of residence to cancel. If they don't know that they don't, they must go to the public security department to check and cancel in time. If they wait until the itinerary is arranged and stop at the airport, it will be too late.