Noah's inscribed notebook rang continuously. It was only June at first, but even the other rank 5 cultivators in the neutral city started to send him mental messages.
All their messages described the same events. It seemed that the gravitational pull had started to affect both the "Breath" and the buildings on the surface.
That wasn't a force that the inscriptions in the underground area could block completely. Noah had created a small dark star that continued to grow stronger with time. Its effects were bound to spread in the outside world.
It wasn't an issue when the experiment affected only the "Breath". Cultivators in the heroic ranks would often perform techniques that involved large amounts of energy.
Still, the buildings had started to crack under that pull too. The citizens of Divine Market city began to fear for their lives at that sight.