Although he planned to go and garrison a Chaos City, Dongbo Xueying was in no hurry to set out. Having just become an inner hall elder, he still needed to carefully study the fourth floor of the Myriad Phenomena Hall, which held countless exceedingly precious scriptures. Once he began garrisoning a Chaos City, he likely would not return for a very long time.
So...
Dongbo Xueying remained within the Great Void Heavenly Palace for another twenty million years. Aside from perusing texts in the Myriad Phenomena Hall, he spent almost all his time cultivating in the Time Hall—nearly two billion years passed within it, and he expended ten thousand merit points, equivalent to one Origin Realm Stone. This made some of the other inner hall elders say, "Elder Dongbo, the years of cultivation are long indeed. Why do you..."