Traveling Between Two Worlds, I Am Cultivating Immortality in Another World

The protagonist who accidentally works at a construction site discovers that he can travel to and from a fairy world. Naturally, he cannot let go of such a good opportunity. So in modern times, he is the only immortal cultivator in the world. In another world, he uses modern knowledge to develop in a low-key manner, and he thrives in both worlds. This article prefers daily funny, daily funny, daily funny, important things are said three times. (In addition, this article does not have a normal name. If you find it, you will be punished a hundred times.)