(Yicai Global) Sept. 13 -- Chinese authorities are closely monitoring all cryptocurrency trading platforms with the intention of stopping trading, a source close to regulators told Yicai Global today.

Their intention is to kill trade between China's legal tender (the yuan) and virtual currencies, not to ban cryptocurrencies, the source emphasized.

Trading services were still available today on Huobi, Okcoin, Btcchina.com and some over-the-counter markets.

Some trading platforms have already ceased operations, and many have ended yuan to cryptocurrency trading. Third-party digital asset trading platform Guojiaowang said it would suspend all cryptocurrency trading after regulators sent a notice requiring platforms to rectify certain problems. 

BitKan announced that it will suspend activity on its OTC market platform from 12.00 a.m. tomorrow.

China has unveiled hefty measures aimed at supervising virtual currency issuance. It became the first country to completely ban initial coin offerings (ICOs) last week.