The primary reason is to defeat our Anti-Ballistic missile capabilities. That has been stated directly from the Chinese PLA.
http://www.freerepublic.com/focus/f-news/3195758/posts
OK, I see their wishful thinking but our anti-missile-missile system works on radar and it won’t matter.
I put this into the basket of wishful thinking by the chinks. Of course, you know they have already put men on the moon, don’t you? LOL They are much more creative with their science fiction than the ruskies were.