In the area of mythogical studies, Wang Tsung of the Eastern Han used a special method in his work, Lun Heng, to "give one some of his own medicine" (Direct one's spear against one's own shield). That is, he used mythological constructs to refute other mythological constructs. With such so-called pragmatism, he criticized those who showed a wild imagination by his deductive method. He chided Han scholars for such superstitious beliefs as "the echoing with heaven and man," "auspicious and ill omens," "the magical calculation of the primary five elements," and "the tattoo of the gods and ghosts," etc. In this article, I analyze and compile the way which Wang Tsung used to refute mythological constructs in his Lun Heng. Besides, the way he followed is also a good opportunity to have a reversal of thinking in the study of mythology.