Forty Meter Long Knife

Tang Yao is dying. As he was dying, he seemed to hear a voice. "Extraordinary talent, peerless weapon, mysterious treasure, which one do you want?" He thought for a moment and said, "I want a peerless magic weapon." "Query target memory... Detect target ability... The strongest magic weapon is judged to be: the 40-meter-long sword. " "... What!?"