My technique advances once a day

[Decisive Killing][Elevated Violence][Ruthless Sweeping][No Female Lead, Only Tool Man]
The Millennium Dynasty will eventually decay, and the Sects and Aristocratic Families will gradually decline.
The demons are watching covetously, and the alien races are preparing for war.
The lower-class people are struggling to survive, and their future is uncertain.
Shen Yuan traveled through time and got the Crimson System to protect him. He could comprehend any martial arts in an instant, and he could learn a new level every day.
What a ten-thousand-year-old demon, what a foreign genius.
Those who ravage the world and oppress the human race will be killed!