The Thunder Purgatory contained quite a bit of Space Law Power, and even a fair amount of Law of Time. If nothing unexpected happened, once the Eastern Emperor Bell refined and absorbed all of it, the space inside its body would surely grow much larger. This filled Ling Tian and the others with excitement. In particular, quite a bit of Lightning Power had re-formed in the Thunder Purgatory. Absorbing it would help Ling Tian and the others improve their mastery of World-Ending Lightning Tribulation Power and their resistance to lightning, at least to some degree. That would make it easier for them to face the Lord of the Universe's Ultimate Lightning Tribulation Power attacks in the future.
After that, Ling Tian and the others cultivated while helping the Eastern Emperor Bell refine the Thunder Purgatory. The space inside the Bell's body had grown further, and Ling Tian and the others had improved their control over their minds slightly. As a result, they refined the Thunder Purgatory rather quickly. At this rate, they would be able to refine all of it before long.
Time flowed on. In the blink of an eye, more than a hundred thousand years passed. Of course, that was still the time inside the Eastern Emperor Bell's body space; in the outside world, only a little over a thousand years had gone by.
After all this time, the Eastern Emperor Bell finally finished refining the Thunder Purgatory. The space inside its body had grown by nearly ten percent. Although that was the extent of the increase, and the space's time multiplier hadn't changed, its larger size had noticeably strengthened its suppressive effect. Ling Tian and the others would surely become much more resistant to outside pressure once they reached the space's capacity. What's more, the increased size