This World of Immortality Is Full of Bugs

In the vast land of Kyushu, legend has it that there is an "Immortal Lord" who is above the clouds. He has the power to shift the stars. He is the god that all living beings look up to, and he is also the ultimate shadow that blocks the path to ascension for all immortal cultivators. Wang Xingsen, a young man from the bottom, accidentally traveled through time and awakened the mysterious system. Under the guidance of the system, he started from an unknown handyman disciple, changed his fate against the will of heaven, uncovered the secrets of ancient ruins, and killed various geniuses. Everyone thinks this is an inspirational legend of Wang Xingsen's greatest achievements. However, when Wang Xingsen finally stood on the top of the Nine Provinces, preparing to launch the final challenge to the "Immortal Lord" who sat above the nine heavens, he discovered that all the rewards given to him by the system, every inch of the laws of heaven and earth he understood, and even every drop of spiritual energy flowing in this world were just a wisp of residual thoughts overflowing from the fingertips of the Lord. It turns out that this vast world is just a fantasy called "Quest" that the protagonist weaves to spend his endless lifespan...