how works the subsite after read more?

Hi,
i`m using Joomla article to show in subsite only the artice.
if i cklick on read more on the wallintro article the site starts new with the same content. but the link goes from ...news-test/ to the link of subsite
...news-test/96-fachthemen/8-lorem-ipsum-dolor-amet
but there show me the wall and not the full content of the article?

can you explain me what i have to do?
thx

Hi,
thx for your answer. I have send you an email.