So it seemed like his Void Qi did have an effect, it was just that this effect was far too minimal when compared to the overwhelming size of the area the Realm Fracture had influenced. It was like throwing sponges or paper towels into the sea. Would it in theory one day dry everything up? Perhaps, but before then you'd have a whole host of problems to deal with.
For Di Tou, even if the Realm Fracture really remained unresponsive and didn't cause any trouble for him, which he found rather unlikely, just the time it took for him to regenerate his Void Qi fully and to muster up the energy to form such an attack meant that he wouldn't be able to do anything but sit here and rince and repeat the process…
