I recommend "Cute Secret Agent Fairy Concubine" to you. This is a Xianxia novel. The male protagonist is the illegitimate son of the Heavenly Emperor. After he was defeated and became the third prince of the Great Qin Empire, he finally became a spy with the help of the female protagonist. The female lead transmigrated into Princess Qingqiu and finally became the only nine-tailed fox left in the world. The son of the male and female lead is also a nine-tailed fox. The whole story involves the five elements, treasures, mental cultivation methods, conspiracies, and so on. I believe you will definitely like this novel! I hope you like my recommendation, Mwah~