Cultivation of Immortals: from a Mortal to the Invincible Ancestor of the Immortal Clan

Everyone only knows that our ancestors are unfathomable, but they don't know how many ups and downs, hardships, betrayals and deceptions there are behind them. The ancestor was just a young man who liked to dream. Traveling back to ancient society, Zhang Yizheng cultivated his confidants and advanced science and technology, hoping to become a powerful person who could advance, attack, retreat and defend. Unexpectedly, he came to a dangerous and cruel world of cultivating immortals. The conditions for cultivating immortals are extremely harsh, and one may lose one's sanity and become a ferocious beast. If you don't cultivate immortality, you will be a slave to others and a fish to others. Moreover, his golden finger seemed to be only in a fixed position and unable to move with him.