The general idea is that the Chinese DF-21 ballistic missile has been equipped with a high-explosive warhead and a guidance system that can find and hit a aircraft carrier at sea.

It's a two stage, 15 ton, solid fuel rocket that could instead carry a half ton penetrating, high-explosive warhead, along with the special guidance system (a radar and image recognition system).

It could carry a single thermonuclear warhead with a maximum explosive force of 50 kilotons.