After Peter entered the Mechanical City, he first encountered a strange mechanical human. Then, he heard an announcement about the coronation of the new Virgin Mary from No. 0. Together with the explosion he had heard outside the city, he was surprised.
When these things were connected, it was not difficult to find that the explosion in the city was probably related to the new Virgin Mary. Before entering the city, Peter had deliberately looked up information about the Virgin Mary on the Skynet.
No. 0 was now controlling his smart mecha to rush to the explosion area. Even if he could not enter the core area of the explosion, he could still steal some useful information from nearby.
Most importantly, the two mutants who had entered the city might also appear near the scene of the explosion. Peter and No. 0 might even be able to capture the two mutants.