thank you so much for this great answer 🙂
thank you very much.
I had already written the question in wordpress.com. this is the answer from wordpress.com:
We provide support only for blogs being hosted WordPress.COM and not for ww.wp.xz.cn software installs. You are posting to the wrong support forum.
WordPress.com and ww.wp.xz.cn are completely separate and different http://support.wordpress.com/com-vs-org/
If you don’t have a username account at ww.wp.xz.cn click http://ww.wp.xz.cn/support/ and register one on the top right hand corner of the page that opens, so you can post to the support forums there and receive advice from ww.wp.xz.cn bloggers.