What is the reason why the passengers disappeared after boarding the plane and the plane was completely emptied?

Security issues, finding passengers, flight delays.

1, security issues: sudden disappearance of passengers after boarding may cause security concerns. In order to eliminate the potential threat or the risk of dangerous goods being taken on the plane, airlines will take comprehensive customs clearance measures.

2. Looking for passengers: The sudden disappearance of passengers requires the airport and airline staff to take action, check the surveillance video, check the ticket information, and cooperate with security agencies to find the missing passengers as soon as possible.

3. Flight delay: This situation may lead to flight delay, because it is necessary to wait for the relevant departments to complete the investigation and customs clearance procedures.