My Immortal Cultivation Technique Has 200 Million Words

Traveling to a world with extremely high technological level, only after my memory awakened did I realize the "horror" of this world. There is a demon-killing cannon, and with one blast, the demons who have been practicing for hundreds of years are wiped out. You can't stop the demon-killing gun without two hundred years of cultivation. In the starry sky, there is the Nantianmen Starship, guarding the portal of the earth. There are thirty-six Tiangang meteor cannons, falling stars, nothing to mention. There are seventy-two earth evil net pockets. After opening, everything within the range will be reduced to ashes... A world where technology and immortality coexist. Shen Taisui looked at his 200 million-word immortal cultivation technique and fell into deep thought...