Cave Invasion: I Signed in for Twenty Years

Su Ze traveled to a parallel world, only to find that the cave had been invaded. In order to defend the caves, humans practiced and fought, and built long defense lines. But one city after another was still destroyed by the catacombs. The end of the world seems to be close at hand. At the critical moment, Su Ze awakened the sign-in system. Sign up for the ten-fold body strengthening agent, sign up for the bloodthirsty sword fighting skills, sign up for the secret method of the firmament star map... Unknowingly, Su Ze has become the god of war in this world! When the largest underground cave was lost and mankind fell into doomsday panic, Su Ze emerged from the sky and destroyed the earth with one sword! With one man and one sword, he can protect the country for thousands of miles! Keep the lights on every house! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.