This autumn's Naval War College Review includes an article by Andrew S. Erickson and David D. Yang that explores Chinese interests in antiship ballistic missiles.
Excerpt: For China, the ability to prevent a U.S. carrier strike group from intervening in the event of a Taiwan Strait crisis is critical. Beijing’s immediate strategic concerns have been defined with a high level of clarity. The Chinese are interested in achieving an antiship ballistic missile (ASBM) capability because it offers them the prospect of limiting the ability of other nations, particularly the United States, to exert military influence on China’s maritime periphery, which contains several disputed zones of core strategic importance to Beijing. ASBMs are regarded as a means by which technologically limited developing countries can overcome by asymmetric means their qualitative inferiority in conventional combat platforms, because the gap between offense and defense is the greatest here.
From NWC Public Affairs