I have a question.
Since China manufactures just about everything; including chips: how is the world supposed to get mining hardware in the face of a Chinese crack-down? What prevents Chinese authorities from seizing mining inventory and using it to attack the network?
1) I think chips are produced in Taiwan - they are moving to ShenZhen but there is no harm. Get this correct first: Bitcoin is a second consideration of China's government, Chinese people are the top enemy of Chinese government. Producing chips is harmless to our government.
2) If China doesn't produce mining equpiment, the bitcoin produced will not be less.
Even consider 1 + 2, your question is actually valid, because China government can technically use it to atack the network. But attack network only serve to discredit Bitcoin, and that is necessary only in the plan B scenario, plus the detective work that Lord usually averse to do, double unlikely. Our goverment should focus on what they are good at: discredit people and organizations, not descredit a technology.
Regarding plan B:
https://bitcointalk.org/index.php?topic=589894.msg6715566#msg6715566