Secluded for a Millennium: This Isn't the Jianghu I Knew!

"A dream spanning thousands of years, what year is it tonight?" Lin Yi obtained the Great Dream System, which allows him to learn martial arts by observing others' moves. [The host has secretly learned all kinds of martial arts, unlocking the ability to imitate in dreams!] Lin Yi enters the dream; his consciousness can transform into birds and beasts, or into other people, in the outside world. "I am a bear, I rise early and return late, I hunt for food and sleep..." "A dream spanning thousands of years, what year is it tonight? Only when I awaken from this dream will I realize who I am!" [The host imitates a brown bear in a dream, gaining the bear's power.] "I am the Gentleman's Sword, I am a virtuous and handsome gentleman..." [The host imitates the Gentleman Swordsman Zhao Lingxiao in a dream, gaining thirty years of Zhao Lingxiao's internal energy.] Looking at the person who looked exactly like him, knew his martial arts, and behaved exactly like him, Junzijian cursed, "Great Dream Demon, get out of here! All my martial arts have been stolen, stop imitating me and go and harm other people!" Enemies locked in a fierce battle in the martial arts world cried out: "Oh no! It's the Great Dream Demon! Stop right now! If we keep fighting, our family's martial arts will be stolen!" ... The appearance of the Great Dream Demon has made many people unconvinced. They are determined to create the ultimate martial arts technique so that even the Great Dream Demon cannot steal it. Under the torment of the Great Dream Demon, martial arts in the Jianghu (martial arts world) are constantly evolving and innovating. After a thousand years of seclusion, the immortal cultivation sects that had been closed off from the mountains were completely dumbfounded when they finally emerged. A martial arts master in the martial world can shatter the void, yet you're telling me this is just some mundane world?