Xie Zhaolin had no regrets about his sword and was known as the "Lone Goose Blade", but that night he mistakenly recognized Liu Qianshuang as his younger brother and cut off his left arm with his own palm. When the moonlight was stained with blood and the truth shattered, he realized that the person he killed with his sword was actually his brother Liu Qianshuang whom he had not seen for fifteen years. The blood relatives who used to eat cold porridge together and inherited the father's teachings were misinformed by the world and plotted by the enemy, and became the souls of the sword in his hands. Xie Zhaolin burned his sword and became a demon, crushing the seven sects, just to ask him to say, "Do you still remember the candied haws when you were a child?" But Liu Qianshuang had cut off his arm for a blade, and his blood-stained clothes were stained with frost. He sneered: "You killed your brother, not your enemy."