如何删除已发布的文章？

 两种方法，
 
1、点击已发表的文章，-〉click "Edit" just below the title -> go to the bottom -> click "publishing option" -> uncheck all the box -> click save
 
2、go to http://haiounet.com/d/admin/content/node -> look for the article that you want to delete -> check the corresponding box -> click the down arrow in the "Update Options" section and select "Delete" -> click "update" button in the "update options" section
 
You can use either option 1 or option 2.