Chinas government is starting an all-out war against bitcoin and other digital currencies by banning fundraising through initial coin offerings and shutting down all mainland digital currency exchanges?
China did not declare war on the Crypto-currency. In September last year, the Chinese government announced a crypto currency threat to the country's economy due to the fact that with the help of its out of the country could withdraw funds uncontrolled. With regard to the ICO projects, they immediately warned of significant fraud and the need to protect the rights of investors. All this time, the Chinese government was looking for ways to solve this problem. Recently, there has already been allowed the possibility of authorizing an ICO, but regulated by the state. Thus, China is gradually returning to the usual way of using crypto currency.
They did not literally declared war but China already banned all cryptocurrency related, you cannot even search it in their internet and now they are targeting those miners and exchanges, don't know the update now but for sure they are just doing it because they just want their own coin to subscribe in their country.