Storm Blood Dragon Knife

During the Ming Dynasty, a certain county magistrate's house was exterminated by an unknown person. In the end, only the young master He Tian was able to escape. However, he learned that his sister was not in the house that day. He Tian, who had escaped, searched for his sister and embarked on the journey of the world... However, the stormy sword Blood Dragon Sword in the arena reappeared, and another bloody storm began in the arena... Time slowly passed, and He Tian discovered at this time that all of this was related to him! Has he found the reason?