Tang Tang Huo Yunxi is Shuang Jie. According to relevant public information, Tang Tang and Huo Yunxi are two heroes in the novel Wolf Nature, while Tang Tang and Huo Yunxi are double-clean. Double purity is a relatively common vocabulary, which originated from the Taoist concept and refers to the double purification of lust. In novels and online languages, double purity has a broader meaning, which generally refers to the state that men and women have never had sexual relations, or more broadly refers to emotional purity.