What we should do:
1) Go like hell on completing NMD
2) Revive the Civil Defense Program
3) Beef up attack sub fleet even more than the current POR
4) Massively beef up ASW capabilities (or more accurately, vastly speed up the already planed revamping)
5) Find and expell PRC agents and infilitrators
6) Stop tolerating all aid given to terror states and terrorists by the PRC and Pakistan and publicly call them on it
7) Incrementally shut off trade with the PRC while in parallel ramping up trade with India, Thailand, Philippines, and Chile
8) Recreate SEATO but this time replacing Pakistan with India and adding in Taiwan, Japan and Israel
9) Conduct a major review of all military systems for EMP withstanding capability and undertake a crash retrofit program
10) Revive work on IRBMs - sub launched (already planned, witness recent work awarded to Lockheed - Martin), sea surface launched, air drogue launched (note past successful demo of this with an ICBM at Vandenberg) and TEL launched. Yes, that would mean that we are tearing up the INF Treaty. The INF Treaty is rubbish - Pakistan, Iran, the PRC, DPRK and a number of other soon to be nuclear states are non signatories, putting us and *our forward deployed forces* at a distinct disadvantage. Plus, I strongly suspect that some of the former Soviet states are cheating on it.
How's that for an action plan? ;)
As to China, and everybody else that could join in, what are the individual persons doing for their own survival. A couple hundred nuke detonations of 100 kton each across the country would not kill everybody right away, fallout being not much of a threat to the prepared, but the economy would be out of order for years, maybe decades, maybe 200 years. It is survivable, but only if everyone who is interested in active preparation starts preparing in reality. The Internet can get the word out, but the Internet won't pick up a shovel.
Nice dream.
Probably less than 0.0001% of it will happen, if that much.