We Agreed on the Novice Village in the Lower Realm, but Why Are the Tombs of the Immortal Emperor Everywhere?

Lu Bei traveled to the fairy world and was unable to break through after reaching the "human fairyland". He originally thought that he would die within a thousand years after three disasters like other immortals. But something strange happened. He didn't have the three calamities of the immortals at all. He seemed to have an infinite lifespan and kept living... In order to fear that people would know that he was an alien, he had been living cautiously. It wasn't until three thousand years ago that something unexpected happened. The Wanjie System is coming! As long as you complete the task, your cultivation level will be improved. [Become the lord of a city, and achieve a breakthrough in cultivation to "Earth Immortal"] Lu Bei knew that he finally no longer had to live in frustration! ! He knew very well that he could not be the lord of a city in the fairy world, so he set his target on the lower world. Although the lower realm is difficult and has lost its foundation, I can achieve breakthroughs in cultivation by completing tasks, so I don't care about that at all. … He sneaked into the lower realm. Although the task was easy to complete, he found that the so-called lower realm was not simple at all. Deep in the sword tombs of the martial arts world are the weapons of the Immortal Emperor. The genetic medicine in the technological world is actually the flesh and blood of immortals. Even the sweeping monk in Xinshou Village is looking at the stars to figure out the secrets... —— Lu Bei fell into doubt: "Is the place I traveled through really the fairyland?" … Countless years later, when he entered the lower world, it was the world before he crossed over—— The yellowed calendar was fixed on the day before he crossed over, and the computer screen flashed [Countdown to the collapse of the fairy world! At this moment, he finally understood. Why am I immune to three disasters, have unlimited lifespan, complete system tasks and improve my cultivation... Why are some lower realms so weird...