When you click to try to subscribe, the aforementioned prompt appears. In fact, the subscription path or parameter that Google has replaced should be in the following form:
http://www.google.com/reader/view/feed/http://feed.henshiyong.com
If you find that your blog (RSS) is subscribed to by many users via Google Reader, if you care about these users, and if you like Google Reader, then take action quickly and update this parameter!