OH CMON I FIGURED IT OUT
The snake is the "last guardian" of the "gong". I had no problem with him but I summoned him with my curiosity. He is a fuckhuge entity. I jumped into his mouth and after coming out of his tail I exploded him so the way is clear.
Fucking myths and stupid ERP of the ancients. Made me almost get brainrot. 
Yes I figured out the realization by getting angry how dumb the movements are. And by constantly summoning snakes down my spine.
> No mind movements necessary 
> I will protect you with my big law body 
Yeah sure thanks pal. If I don't know of this big snake bullshit concept I would have been fine by myself.

Whatever I will finish the book. The insights flow in faster if it makes me angry.