Ask the title of the novel, the novel before 20 13, the protagonist is Sun Moon Mystery or Sun Moon Elixir, and the supporting role is Fox.

I'm sorry, because there is no more information, I can't determine the specific name of the novel. But according to the clues you provided, here are some possible novels: 1. Jiuyang Emperor Zun: The protagonist of this novel has the body of Jiuyang, which is somewhat similar to the body of the sun and moon gods or the elixir of the sun and moon. There may also be a little fox as a supporting role in the novel. 2. The story of Fox Fairy: Although the protagonist is not necessarily the mystery of the sun and the moon, it is not necessarily the elixir of the sun and the moon, but there is a little fox in the novel as an important character, which may involve some special physique or ability. 3. "Fairy Inverse": This is a very popular fairy novel, and the protagonist Wang Lin may involve various special constitutions and pills in the process of cultivation. Although I'm not sure whether there is a little fox as a supporting role, the novel is rich in plot and worth reading. These are just some possible novels, and the details need to be determined according to more details. If you can provide more information, such as the type, plot and author of the novel, I will try my best to help you find a more accurate answer. In addition, you can find novels in the following ways: 1. Search on the novel reading platform: use keywords such as "Mystery of the Sun and Moon", "Sun and Moon Elixir" and "Little Fox" to browse the search results and see if you can find a novel that meets the requirements. 2. Consult novel lovers or related forums: post questions in novel lovers' communities or forums to seek help and suggestions from other readers. 3. Recall other relevant information: Try to recall other plots, characters or features in the novel, which may help narrow the search scope. I hope you can find the novel you want!