I Marry My Way To Immortality

After 60 years in a world of cultivation, Kevin Summers faces death until a strange system offers him a deal. Marry to live. Bear children to grow stronger. From widows to saintesses, he builds a powerful clan. But when his heirs outshine him, who will control their destiny? Adapted from the Fanqie Novel "Duo Zi Duo Fu, Xian Zi Yun Qi Bao Zha" by Diliubai.