When compared to the Murim of the past, the Murim of today embodied chaos and destruction. Until the people had had enough of their nonsense. One ordinary morning in Murim, with the poor suffering and the powerful growing fatter and fatter while bathing in wealth and prestige, as is customary. The sun simply vanished into thin air, leaving only its silhouette where it was supposed to be, followed by the darkest skies, literally everything was pitch black, and everyone had to use torches or lamps to illuminate their surroundings.
The recent disappearance of the sun did not bother the suffering slaves in the least, but rather encouraged them. Treating it as an escape from their suffering, death was more welcome to them than this slavery they call life; even a dog's life was far more comfortable than theirs. The upper classes, on the other hand, were so taken with the phenomenon that they went to visit the lower echelons of the slums just to see where the sun's silhouette was. This continued for months until 500 massive caves with doors sprouted up all around Murim, forming an array shaped like a circle with many rings inside it.
These caves were also no laughing matter; they were all symmetrical in size and shape. Each cave had massive 10-kilometer-high doors that sealed whatever was inside. The traitors of the empire claimed ownership of any cave that sprouted in their territory and stationed guards around the gate. The traitorous 10,000 children and 900 of the emperor's wives all came to see these caves in person to combine their powers against any hostile creatures that might be inside.
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They checked all caves to see if any of them were still open, but none were. Some of the strongest emperor's sons tried to force open the doors, but not even an inch moved; for demi-god staged martial warriors, destroying a mountain was as simple as sneezing or even shouting at it to wipe it off the map. But the strength of even all the emperor's children was not enough to overcome this door made of unknown materials. The doors were resistant to Qi, and they were also said to be the most indestructible thing in Murim at the time. With no other options, the emperor's traitorous children and wives waited for the cave's doors to open.
Months of darkness and silence had passed since then, but business continued as usual in Murim. Except for the excessive use of torches and lamps all around Murim, everything was the same. The emperor's children and wives were still searching each cave for an opening, but none did. Until the next day, when a strong earthquake struck the center of Murim. The ground was cracking, but it was more like it was exploding from something boring a hole through to go outside. The strong earthquake lasted about a day, and by God's grace, no one died, not even the weakest slave.
The most amazing part came after the earthquake, when a massive cave much larger than the rest of the caves appeared in Murim's center. The said newly emerged cave was so tall that no one could tell how tall it was because it pierced all the way to Murim's very atmosphere, so even if there were Martial experts who could fly that high, they would still not reach the top.