I Just Traveled Through Time and Became a Villain, but I Was Pointed at a Gun!

[New theme villain article] [System + Gou Daoliu + Xiangong Technology + Wu Dao + Not the Holy Mother + Decisive Killing + Non-invincible article] Be cautious when entering the pit. Being from a humble background is not a shame. If you can bend and stretch, you can live a long time. What's more, Meng Nan is a villain, and he is still the youngest. But fortunately, Meng Nan is a time traveler. He has awakened the system and can live for the sake of living. A cicada of the Spring and Autumn Period, a history of conspiracy and immortality.