As long as one continued heading north they would eventually reach the centre of the Lower Plains and along the way, the energy in the atmosphere would become denser.
With that, the land became bigger, the cultivators and beasts became stronger, and all the dangers were on another level, but the same could be said for the opportunities.
The reason that north on any compass pointing towards the centre of the Lower Plains was because of how the magnetic field and space as a whole was orientated.
In the centre of the Lower Plains is an extremely large black hole in the sea and despite being in the middle of a sea, it formed a bottomless pit known as the forsaken centre that none dared to even get close to.
Around it were all kinds of dangerous creatures and the forsaken centre itself had a strong current and would draw people toward it before ripping them to shreds.