How Come I Am Invincible When I Am Forced to Go Down the Mountain?

[Invincible writing + decisive killing + hot blood + high martial arts] Five years ago, Xiao Junnuo's dependent sister disappeared, the orphanage where she lived was destroyed, and she narrowly escaped death! Five years later, Xiao Junnuo was forced to go down the mountain and returned domineeringly! "You are the eldest son of a noble family, and no one dares to offend the top tycoons? I can kill you with just a word!" "You, the daughter of a rich goddess, are so high and mighty? My senior sister is so charming and graceful!" "You are unparalleled in your martial arts? My master is the only one in my life who can control the world!" "You invade my territory with millions of soldiers? One hundred thousand soldiers under the God of War will join me in the conquest!" "I, Xiao Junnuo, have the final say in this world's affairs!"