Legend of the Temple of Heaven: It is said that the Temple of Heaven was just built. One day, the emperor visited the Temple of Heaven, but found weeds in the Temple of Heaven. The emperor was very angry and said, "Why are there weeds in my Temple of Heaven?" At this time, the ministers around the emperor saw it, recognized it as motherwort, and knew that it had many uses. They quickly said, "Do you think this grass looks like Eulaliopsis binata? This is the high mountain and flowing water in China. It has many uses, because your virtue makes heaven very satisfied, and genius makes it grow especially here. "