Xiang Wencheng said, "The foreigner's name is not Niu, but Niu.". I think the matter of lighting the lamp with rush grass can only be a legend. He returned the conversation to the rush. He also thought that when there were no flowers in the world, there would be hemp, hemp seeds could also extract oil, and the rush might be dipped in hemp seed oil. But at this time, Xiang Wencheng was willing...