Tens of Billions of Years of Cultivating Immortals

A son was born to the Beiwen clan, and in just a few years he killed the strongest clan member! Defeat the Juggernaut! Refining the tenth grade of the most powerful divine elixir! Create the strongest seventh-grade artifact! Defeat the three demon kings! Rule 3,333 continents and become the strongest! After thirty years, he became an immortal and traveled three hundred billion years into the future. Unexpectedly, his cultivation level was at the lowest level. The collision between technology and magic in the future world is gradually becoming more intense. The protagonist goes through all kinds of hardships just to return to the past!