This is a micro simulation black hole.
Its actual volume is probably only one centimeter. The massive black sphere just displayed is merely a 'black hole anomaly' produced by the simulation.
Its existence time is likely only a microsecond, but its impact on the outside world is extremely exaggerated.
After the disappearance of the black hole, a massive water bulge appeared on the surface of the sea, so vast that its edges were out of sight. The water bulge was crystal clear and rapidly rising, as if being gently lifted by an invisible giant hand. The gravitational system of the entire planet seemed to lose its effect under its shockwaves, obscuring distant islands and even further continents, turning the world before Gao Gong's eyes into one of water.
A towering mountain of seawater stood between heaven and earth, its peak seemingly just a thumb's width from the radiation layer.
[Task complete, experience +50 million, received three random enemy technology blueprints]
