The military arts team is possessed.
It took the old security guard quite a while to recover from his shock, and the first thing he did was to make a phone call.
That behavior just now was an outright intrusion into First Middle School.
Whoosh, the old man picked up the phone on the desk, and before long, the call connected.
First Middle School has many security guards; this phone is an internal line for security, and you might as well call it a transmitter. Speaking here means all the security staff within the campus can hear you.
"Someone rode an electric bike and flew over the gate into First Middle School."
"Someone rode an electric bike and flew over the gate into First Middle School."
...
He repeated this message three times.
Instantly, the voice came from the communicators at the waists of the security guards all over the campus.