The First Sword of Immortal Martial Arts

In the Xianwu Continent, there are thousands of races. The human race and the demon race are mortal enemies in the past, and the war has lasted for countless epochs. The foundation that the human race relies on to establish its foothold in the Three Realms is a guardian artifact that suppresses luck. But a hundred years ago, the artifact disappeared for no reason, just like the backbone of the human race was broken. Without the protection of the artifact, the demon army broke through the border like a tide, and the human territory fell inch by inch. All lives were devastated, and mourning was everywhere. Just when the human race was on the verge of extinction, a descendant of the Sword God lineage turned out to be. He stayed in seclusion on the Canglan Mountain Road for three years, and understood the Sword God's legacy. He opened the sky with one sword, and the sword energy spread across thousands of miles. He killed half of the elite demon clan on the spot, and all the demon lord's personal guards became dead souls under the sword. In that battle, the color of heaven and earth changed, and the demons were frightened. The dying demon tribe was forced to sign a peace agreement with the human race. Within a hundred years, the two tribes would not invade each other, and the Xianwu Continent finally ushered in a brief period of peace. As time goes by, the century is approaching. The sword marks on the Canglan Mountain Road have long been buried by the wind and sand, and the successor of the Sword God has disappeared without a trace. But no one noticed that under the Demonic Abyss in the far north of the mainland, the demonic energy that had been dormant for hundreds of years was surging crazily. The missing guardian artifact is actually hidden in the depths of the Demon Abyss, emitting a weak and strange light... The illusion of peace is about to be completely torn apart.