用于存储官方博文、社区教程中所需的图片引用等小文件 (Store image, code snippets, PDF, archive files for the official & community posts).
官方博文请放置文件在 (Official posts to the folder): posts/YEAR/POST-SLUG/；
社区教程请放置文件在 (Community tutorials to the folder): posts/community/tutorial。