Novel info
He was fooled by Xiuxian

In 2278, a black hole appeared 20 light-years away from the earth humans sent star battleships into the exploration, and unexpectedly found that there was a cave in the black hole. There was a legendary immortal who could fly with a sword and wander around the world high level immortals cannot leave the black hole, and low-level immortals cannot travel outside the black hole for a long time soon, the earth and the immortals reached an agreement to help the earth people cultivate immortals, and the low-level immortals established an immortal Sect on the earth since then, the earth has entered a new era of immortality "I want to fix immortals!" At the age of 8, Yichen shouted ten years later, "cultivating immortals is so tired. If you are deceived, you might as well engage in scientific research. Immortals are liars."