This is all the evidence and doubts Bai Pu could gather within his capabilities.
Finally, why does Bai Pu trust Legion Commander Galileo?
The reason is simple, because Galileo couldn't possibly be a Naga spy.
Otherwise, there's no need to "guide the Imperial Fleet to bombard the Gate of the Abyss"; as the Commander, Galileo's orders alone would suffice.
Moreover, Galileo is affiliated with the Demetri Family, yet his feelings for Lady Rile are rather common—at least for now. This compels him to respond to the issue of the real and fake Lady Rile, while also dealing with her being swapped in a rational manner.
For fake Lady Rile to guide the Imperial Fleet to bombard the Gate of the Abyss, bypassing Galileo is unavoidable. She will definitely try to persuade him, get him to agree, and dispatch battleships into the waterways inside the continent.
