In the World of Immortality, I Bring You the Theory of Relativity!

After traveling for more than a year, Jiang Xiao, who had inexplicably crossed over, finally caught up with Yanyun Suiyue Sect's founding disciples. Because of his physical constitution, he joined the fourth meridian and became a time and space monk. Jiang Xiao expressed great disdain for his master, who only knew about the phenomenon that "matter can distort time and space" without investigating its cause, and only knew that it was so powerful that bricks could fly. The Tao of Time and Space has been developing for so long, but haven't these people even figured out the theory of relativity? Jiang Xiao taught them the theory, thinking that they might be able to deduce some parts that they didn't understand well... It turned out that these two old losers were useless at all, and when asked, they said "it will take more time." Alas—— That's all, Jiang Xiao doesn't bother to care about them anymore. Anyway, Cangwu Realm is very peaceful, and the time travel didn't give him any tasks. He just needs to live a peaceful life, just wait. Jiang Xiao maintained this idea until that day when he accidentally came to an underground place and discovered something that shouldn't exist here at all...