The mana of a Quasi-Saint is also infinite. Take Buddha Tathagata, for instance—there's no need to worry about his energy depletion, as energy never truly dies, and his mana will not exhaust either. The only difference is that they cannot summon all the energy between heaven and earth at once.
Now, Xin Yun has preliminarily reached the Quasi-Saint Realm, and the Foundation of a Saint is none other than the legendary Hongmeng Purple Qi. This item is believed to currently be in Hongjun's possession. To obtain it is an almost impossible endeavor, not worth considering.
With Pangu's Relics, Xin Yun has acquired the power of a Quasi-Saint. Following the path he has mastered, Xin Yun gradually touched upon the essence of the Great Dao. After a millennium of exploration, at last... Xin Yun slowly opened his eyes. Many things finally became clear to him...
