伪静态规则如何添加301定向？

有梦想的咸鱼

rewrite ^([^\.]*)/topic-(.+)\.html$ $1/portal.php?mod=topic&topic=$2 last;
rewrite ^([^\.]*)/article-([0-9]+)-([0-9]+)\.html$ $1/portal.php?mod=view&aid=$2&page=$3 last;
rewrite ^([^\.]*)/forum-(\w+)-([0-9]+)\.html$ $1/forum.php?mod=forumdisplay&fid=$2&page=$3 last;
rewrite ^([^\.]*)/thread-([0-9]+)-([0-9]+)-([0-9]+)\.html$ $1/forum.php?mod=viewthread&tid=$2&extra=page%3D$4&page=$3 last;
rewrite ^([^\.]*)/group-([0-9]+)-([0-9]+)\.html$ $1/forum.php?mod=group&fid=$2&page=$3 last;
rewrite ^([^\.]*)/space-(username|uid)-(.+)\.html$ $1/home.php?mod=space&$2=$3 last;
rewrite ^([^\.]*)/blog-([0-9]+)-([0-9]+)\.html$ $1/home.php?mod=space&uid=$2&do=blog&id=$3 last;
rewrite ^([^\.]*)/(fid|tid)-([0-9]+)\.html$ $1/archiver/index.php?action=$2&value=$3 last;
rewrite ^([^\.]*)/([a-z]+[a-z0-9_]*)-([a-z0-9_\-]+)\.html$ $1/plugin.php?id=$2:$3 last;
if (!-e $request_filename) {
        return 404;
}

这是我的伪静态规则，下面这个是百度云的301规则，如果我点百度云后台操作他就会用下面这段替代上面的规则搞的无法伪静态..小白问下各位大佬如何把301规则写到伪静态规则里，我直接加在前面跟后面都不行

if ($host = x763.com) {

        return 301 http://www.x763.com;

}

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