The appearance of the city lord was a great relief to the guards.
They had no idea what they would do or what they should even do with the sudden disappearance of the city Lord. In fact, the fastest way they could even contact the other cities would be through the city lord himself or the emergency contact slips kept in the mansion.
They had even tried their personal jade slips but none of them worked as all were being actively blocked by the system under Lin Wu's orders.
If the city lord had not appeared, the only other option they would have was to psychically run to the nearest town and ask for help from there. But doing that was difficult and it would take them at least two days to reach it.
The Third Yun city was located rather far after all. It was originally a frontier outpost but then was transformed into an entire city under the guidance of the Tenth Heir of the Hu clan.