If five people go to Heisenway without their passports, they can consider the following options:
Temporary ID: If you are near Haisenwei, you can try to go to the local police station or public security bureau to issue a temporary ID, which usually requires providing ID card and other relevant information.
Borrow a passport: If one of you has a passport that is valid for a long time, you can consider borrowing his passport for travel.
Emergency Contact: Contact the local travel agency or hotel to explain the situation and see if there are other solutions.
Return to pick up your passport: If conditions permit, you can consider returning home to pick up your passport first.
Border Inspection Station: If you are already approaching Hessenway, you can try to explain the situation to the nearest border inspection station to see if you can be accommodated.
Please note that the above plans are for reference only, and the specific situation needs to be determined based on local policies and actual conditions.