Nine Heavens Sword Immortal: Kill Your Fiancée at the Beginning

[The protagonist of this book is invincible, and his younger sister is not related by blood. The beginning is a bit cliche, but after the protagonist leaves Qingcheng, he immediately starts the unparalleled explosion mode! Defeat heaven and earth and defy gods! Fast-paced show-off and slap in the face! ! ! Others' fiancée broke off the engagement at the beginning, but Chen Xuan was poisoned and assassinated by his fiancée at the beginning! Is it the way I traveled through time that was wrong? Then. Chen Xuan is holding Gui Yijian. Kill your fiancée first! … I have a three-foot green-edged sword. Who in the world cannot be killed?