China's central bank has announced that all transactions of crypto-currencies are illegal, effectively banning digital tokens such as Bitcoin.
"Virtual currency-related business activities are illegal financial activities," the People's Bank of China said, warning it "seriously endangers the safety of people's assets".
It is the latest in China's national crackdown on what it sees as a volatile, speculative investment at best - and a way to launder money at worst.
In May, Chinese state intuitions warned buyers they would have no protection for continuing to trade Bitcoin and other currencies online, as government officials vowed to increase pressure on the industry.
In June, it told banks and payment platforms to stop facilitating transactions and issued bans on "mining" the currencies - the trade of using powerful computers to make new coins.
But Friday's announcement is the clearest indication yet that China wants to shut down crypto-currency trading in all its forms.