Chapter 415: Chapter 415 - 403: Kingdom's Citizens 'Welcome' the Royal Forces

The second one is the reactor neutron source, which, as the name implies, uses nuclear fission reactors to generate a large number of neutrons.

However, if he were to manage to create a nuclear reactor now, there wouldn’t be the need to worry about how to “ignite” a nuclear explosion!

So, this method could only be ruled out!