You Hired Me as a Security Guard, So Why Did I Cut the Star River in Two?

[High Martial] + [Invincible] + [Decisive and ruthless] + [Alien races from the stars] Su Mu lived in an urban High Martial era of interstellar colonization. After twenty years of grueling cultivation, his mediocre talent had barely let him make any progress in the fundamentals of martial arts. He could only get a job right after graduation and save himself thirty years of detours. So he became an inconspicuous bottom-level security guard for the wealthy Li family. Then he unexpectedly activated the Security System. [Security Mission Reward: Dragon Elephant Prajna Skill, Perfected!] A secret Tantric art, granting the power of thirteen dragons and elephants. Its force coursed through the body, and a mere touch meant death. [Security Mission Reward: The Ends of the Earth Within Reach!] A vast distance reduced to a step, a step stretched across the world. Ten thousand miles of peril become a smooth road. Where can’t you go? [Security Mission Reward: Divine Elephant Suppressing Prison Force!] Eight hundred and forty million divine elephant particles. A single thunderous roar could obliterate alien gods! Su Mu was forced onto a path of slaying fiends, quelling chaos, suppressing alien races, and sweeping across the martial world of the stars.