I Upgrade by Rewarding Apprentices

Master Yu Zangfeng thought he could finally rest after ascending on his crane, but old enemies soon come knocking on his sect’s gate. At the brink of destruction, he awakens the Disciple Rebate System, the more he gives his disciples, the more he gains in return. Rare treasures, forbidden techniques, spirit pills, he pours them all out without hesitation. "Come, my dear disciples — your master never keeps anything to himself!" Can this generous master stay one step ahead of both enemies and his own monstrous pupils? (Source: Webnovel)