The Eternal Gun Emperor, Calming the Troubled World with One Shot

[No system + invincible cool text + domineering + decisive killing] The protagonist Su Heng accidentally traveled to the Xuanhuang world, became the emperor's son of an ancient family, and awakened the eternal immortal body. This world is different from the world of Su Heng's previous life. This is a world where immortals can be cultivated, and powerful monks can move mountains and fill seas. This coincides with the opening of the emperor's path in this world. … From then on, Su Heng embarked on the road of competing for the throne with various geniuses. I will destroy the ancient holy body and the chaotic body on my own, achieve the throne of the emperor, and calm the troubled times!