Void of Death

One moment, he was barricaded by a spatial shockwave.

The very next? 

His Gu death strike found itself buried in the depths of the creature.

Rui had always known that he would not be able to penetrate the abyssfeeder's defenses with power alone. This was the one area where beasts and monsters had an advantage, and the abyssfeeder used its power extraordinarily well and efficiently while also having more than an order of magnitude more energy than Rui did.

He knew brute force was not the solution.

The actual solution was based on the principle of quantum tunneling.

Particles, when moving fast enough, had a much greater probability of reaching places that one would think would be impossible under classical logic.