It is reported today that China Police Force from recently includes a special unit for monitoring foreign virtual currency operations along with domestic platforms that have moved out of China. This and numerous other measures (ICO ban, blockchain patents, own cryptocurrency, decentralization of crypto trading,etc.) all aim to counter illegal financial activity like money laundering, pyramid schemes and investment fraud.
The situation came to this because after all the anti-crypto and anti-ICO measures, organizers and exchanges have decided to move overseas, outside of the jurisdiction of Chinese government. Some domestic enterprises and individuals evaded the regulation and set up exchanges outside China, moving their servers offshore or registering companies overseas.
Yet, China's National Internet Finance Association under Central Bank reported that such transition to foreign platforms didn't stop domestic investors from accessing them. This poses a formidable risk associated with global digital currency activities, especially that of being involved in pyramid schemes, as reported earlier by Chinese Ministry of Public Security. The most effective way of countering such behaviour is to be able to freeze trading accounts by means of banks.