How to remove redundancy data read by QXmlQuery

stereomatching

@
QFile file("sample.html");

    fileIsValid(file&#41;;

    QXmlQuery xmlQuery_;
    xmlQuery_.setFocus(&file);       
    xmlQuery_.setQuery("//*");

    if(!xmlQuery_.isValid())
    {
        qDebug() << "query error";
        return 0;
    }

    QString result;
    xmlQuery_.evaluateTo(&result);

    qDebug() << result;

@

the xml
@
<html>
<blockquote>aaa</blockquote>
<blockquote>bbb</blockquote>
<blockquote>ccc</blockquote>
<blockquote>ddd</blockquote>
<blockquote>eee</blockquote>
</html>
@
the output
@
"<html>
<blockquote>aaa</blockquote>
<blockquote>bbb</blockquote>
<blockquote>ccc</blockquote>
<blockquote>ddd</blockquote>
<blockquote>eee</blockquote>
</html>
<blockquote>aaa</blockquote>
<blockquote>bbb</blockquote>
<blockquote>ccc</blockquote>
<blockquote>ddd</blockquote>
<blockquote>eee</blockquote>
"
@
Don't know why the result of blockquote would repeat again

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How to remove redundancy data read by QXmlQuery