People's eyes can see things because the retinas receive light reflected from matter and convert it into signals. Although cultivators have greatly enhanced senses, their vision is also generated based on this principle.
However, Ai Changyuan's hand technique gathers all the gravity in the surrounding space, causing a spatial distortion. In turn, the spatial distortion further intensifies the gravity. Only then can he unleash that indestructible attack.
But this doesn't come without side effects. The complex gravity field disturbs the propagation of light, making the light around Ai Changyuan chaotic. Thus, while Wang Qi couldn't see his exact position, Ai Changyuan was also unable to observe the outside world.
When the white paper thrown by Wang Qi broke into his defensive circle, he had to stop and confirm what Wang Qi had thrown.
