From the start, Snow was able to tell that it wouldn't be an easy fight even if he has the male protagonist finally on his side, after all, anything can happen and he has long figured out that Fan Zhiqiang has been prepared to deal the Book of Origin on his own way just in cased Qui Feng change his mind.
After all, the male protagonist has once let them down in the previous life, so it wouldn't be surprising for it to happen once again which it did during in this world where Snow exists.
So when Snow saw those weaponize weapons that shouldn't be working at all with the use of aura, such as guns, was able to deal far more damage over the shield barrier that has been set up around the Book of Origin that only allowed key figures to easily get close upon it wasn't a bit surprising.
