First, in Thanh Hóa province, there was a fisherman named Lê Thận, who was not related to Lê Lợi in any way. One night, his fishing net caught something heavy. Thinking of how much money he would get for this big fish, he became very excited. However, his excitement soon turned into disappointment when he saw that his catch was a long, thin piece of metal which had somehow become entangled to the net. He threw it back into the water, and recast the net at a different location. When he pulled the net in, the metal piece had found its way back into the net. He picked it up and threw it far away with all his strength. The third time the fishing net came up, the same thing happened, the metal piece was once again caught in the net. Bewildered, he brought his lamp closer and carefully examined the strange object. Only then did he notice that it was the missing blade of a sword. He took the blade home and not knowing what to do with it, put it in the corner of his house.