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After all, Mahayana Battles require the use of immortal power, and although the Earth Immortal Realm is filled with Immortal Spirit Qi, allowing for quick replenishment of spent immortal power through cultivation, even the fastest recovery still needs some time.
In light of this, it is an efficient outcome for the Righteous Alliance to have nearly eradicated the demons of South Observance within a mere two hundred years.
This success couldn't have been achieved without the support of Xu Yang. As a Master of All Laws who had ascended to the seventh rank, his role in logistical support cannot be overstated. After each grand battle, the cultivators simply needed to return to Wuzhuang Temple for the enjoyment of healing elixirs, exquisite Immortal Tea, fruits, and vegetarian feasts, healing their injuries and restoring their immortal power...
Without such arrangements, it would have been impossible to sweep through the demons of South Observance in just over two hundred years.
