if question is about good or bad, i think banning bitcoin exchange in china have good and bad affect. why good? because when bitcoin got banned the china's government will be easy to oversee an "illegal" project. and then to avoid the ease of "digital wallet" infiltrated by viruses or hackers can evaporate in seconds without any guarantee can return a dime. in addition, places or parties that facilitate Bitcoin transactions may also be subject to hacker attacks or suddenly bankrupt so many people who have been using their services are subject to loss. This loss can not be reported because there is no law in it. that's why banned bitcoin is Good idea. and why bad? because when bitcoin got banned, when bitcoin is banned, investors in china will find it difficult to invest their shares because it will go through many licenses to the government and follow the exchange rate prevailing in the state bank of china. this is feared will reduce the desire of investors to invest their shares. and I think, other countries will learn the impact of good or bad bitcoin in banned from china. if it is good, then many countries will follow it and if it is bad for china, I think other countries will not follow it.