Lu Changsheng transmigrates into a Xianxia world with poor spiritual roots, failing sect assessments. But he awakens the 'Many Children, Many Blessings' system, rewarding him for every offspring. The talents and strengths of future generations are added to him. Destitute and low-talent, Lu Changsheng chooses to become a live-in son-in-law of a cultivation family, avoiding battles to focus on branching his lineage. While others cultivate, he expands his family. While others scramble for resources, he spreads his branches. While others risk death in secret realms, he continues to procreate. As eras change, geniuses and overlords rise and fall, fading into time. Only the Lu family endures, standing atop the immortal path, living as long as heaven and earth. Read now to witness how a weak son-in-law builds an eternal clan through sheer determination and legacy!