hello dandan and welcome to wikipedia thank you for your contributions i notice that one of the first articles you created appears to be an article about yourself this is a common mistake made by new wikipedians as this is an encyclopedia we wouldn't expect to have an article about every contributor your user page however is a great place to write about yourself just click your user name at the top of the screen when you are logged in and edit it normally the page you created about yourself has been or will shortly be speedily deleted from wikipedia but if you want to use the content from it don't hesitate to ask anyone from this list and they will copy it to your user page if you are stuck and looking for help please come to the new contributors' help page where experienced wikipedians can answer any queries you have or you can just type on your user page and someone will show up shortly to answer your questions here are a few other good links for newcomers the five pillars of wikipedia how to edit a page help pages tutorial how to write a great article manual of style i hope you enjoy editing here and being a wikipedian please sign your name on talk pages using four tildes this will automatically produce your name and the date if you have any questions check out wikipedia where to ask a question or ask me on again welcome