Immortal after a Hundred Reincarnations

Xu Lei transmigrated to an ancient Otherworld. He starts with a 'Ten Thousand Lives Book'! If killed, he can resurrect. If he dies of old age, he can be reincarnated into his descendants. As long as his lineage continues, he is immortal and indestructible! At first, Xu Lei just wanted to have many children to ensure his reincarnation. To this end, he stumbled into a Buddhist Sect, became a Zen Master, and practiced Charitable Giving throughout the world. Later, he just wanted to be a rich young master, living a free and happy life... But unexpectedly, he discovered that the Extraordinary actually existed in this world, and one could achieve longevity through cultivation! — Description from novelcodex.org