As a fan of online novels, I don't have any information about Yin Zhiping and Xiao Longnu being together. Yin Zhiping was a character in Jin Yong's wuxia novel, The Return of the Condor Heroes, and Xiao Longnu was another important character in the novel. Although the relationship between Yin Zhiping and Xiao Longnu was deeply depicted in the novel, they were not together in real life.