The Heavenly Master Has Been Struggling for Three Hundred Years, and Then He Comes Out and Finds Himself Invincible.

Traveling through the troubled times of the Republic of China, Zhang Xuansu awakened [the most powerful heavenly master system]. In order to survive, he hid in the forbidden area of ​​Longhu Mountain and could not leave the house for three hundred years! The first year: Sign in to obtain "Xiantian Gong", and the outside world is in war? None of my business! The 100th year: Sign in to get the "Five Thunder Methods", will the demon revive? I haven't reached full level yet, so I won't go out! The 300th year: Sign in to obtain the land of fairyland. The system prompts: [The sect is about to be exterminated, please host and roll your face on the keyboard immediately! At this time, the Ghost King of Ten Thousand Souls led a hundred thousand Yin soldiers to besiege Longhu Mountain, and the mountain-protecting formation was shattered. The desperate acting head closed his eyes and waited for death, but heard a loud noise from the back mountain—— [Ding! The host comes out of seclusion! Hostile force detected: Ghost King (weak chicken)] [Automatic release skill: Nine Heavens Divine Thunder (Lv. Max)] Boom! A purple-gold thunder pillar soared into the sky, instantly clearing away the Yin Qi within a hundred miles! Zhang Xuansu looked at the ashes on the ground and scratched his white head: (confused) "System, didn't you say it's dangerous outside? Why can't this Ghost King even catch my A?" Ghost King (before death): ... Is this called danger? You call this a flat A? !