Fortunately, once it was confirmed that the Soul Hall Master truly possessed a Ninth-grade Treasure Pill, the Heavenly Nether Old Demon cooperated fully. With the leaders of both factions united in purpose, the merger encountered far fewer complications.
Fearing that the Pill Tower might interfere with the merger, the entire process was carried out almost in secret. Even within the Soul Hall, very few people knew of it. Old Man Mu Gu was only informed when the merger was already more than halfway complete and the Heavenly Nether Sect's personnel had begun entering the Soul Hall.
Upon learning that the Heavenly Nether Sect was about to join the Soul Hall, Gu He immediately developed killing intent and wanted to wipe out the Heavenly Nether Sect first. However, even now, few within the Soul Hall knew about this matter. If something suddenly happened to the Heavenly Nether Sect, Mu Gu would become far too suspicious. Moreover, before the space sealing the Heavenly Flames had been located, Mu Gu remained highly useful. Thus, Gu He could only watch as the Heavenly Nether Sect joined the Soul Hall, while raising his guard against the Soul Hall once more.
With no one sabotaging the process, after nearly half a year of effort, the Heavenly Nether Sect finally joined the Soul Hall successfully. For a time, it greatly replenished the Soul Hall's manpower, truly making up for the shortage caused by the Extreme Yin Land incident. Although the newly joined Heavenly Nether Sect was not yet very capable at gathering souls, it had always been an exceptionally evil sect even before joining the Soul Hall. Murder, arson, and toying with souls were commonplace to them. Joining the Soul Hall was like a fish taking to water, and their ability to collect souls improved at an