What are the articles and books that Huo Yan has published? All of them.

I don't know who Huo Yan is because the name doesn't have a clear direction. However, if it's referring to someone, I can provide you with relevant information. Generally speaking, if an article or book was published, these articles or books would usually be published on the official website or social media. You can try searching for the name of the game or use the official website or social media platforms to find relevant information. For example, if you want to know which "Huo Yan" refers to, you can enter keywords such as "Huo Yan's articles" or "Huo Yan's books" in the search engine to find relevant information. If you know that "Huo Yan" refers to a specific person, you can go directly to the official website or social media platform to check their published articles and books.