Mana Immortal (A Mage’s Cultivation #3)

Isaac is back and the sects are going to war. Leadership puts him in leading from behind a desk and negotiating deals with the Hua Family. That is, till another sect's mountain falls and Isaac hurries to investigate. He takes Mei to investigate the fallen mountain. But even Mei isn't enough to stop what the fallen mountain brings. The corrupt mages' endgame has come, can the rest of the sects band together to stop them? There are adult situations and harem relationships.