After Discovering I Couldn't Die, My Head Turned to Iron!

[There’s plenty of romance, so don’t read if you dislike sweet romance.] Su Ximing transmigrated to the Jiuzhou Continent ten years ago, but his talent was utterly mediocre. At eighteen, he was cruelly dumped! Worse still, when their engagement was called off, his fiancée, who refused to save him, threw him into an abyss. He died a miserable death! [Ding! S-rank rating. Reward: Blood Fiend Art (mid-grade Saint rank)] “What? You’re saying I’ve been immortal and indestructible ever since I bound myself to you? Damn System, why didn’t you say so sooner?!” Only when the System, silent for ten years, finally spoke did Su Ximing realize he had been immortal and indestructible all along... From that moment on, Su Ximing stopped worrying about his life! Watching the disciples of the great powers pass to and fro before him, Su Xi used spiritual energy to amplify his voice: “Su Ximing, a rogue cultivator, has come to pay his respects to all you senior brothers and sisters hailed as geniuses or heaven’s favored sons and daughters... Surely you can at least kill a rogue cultivator like me, can’t you?” When the sect masters and elders saw all the disciples they had once been so proud of lying on the ground, unable to fight any longer, their mouths twitched. You call this guy a rogue cultivator?! Unexpectedly, Su Ximing suddenly raised a hand and pointed his index finger at them. “Su Ximing, a rogue cultivator, pays his respects to all you seniors! One thing, though: either you kill me, or I kill you.”