The fallout from the People’s Bank of China’s (PBoC) crackdown on domestic digital currency exchanges continues, and this time BTC China has announced that it will stop cryptocurrency withdrawals for one month.

On Thursday, the Shanghai-based bitcoin exchange said on its website that the hold will be extended to March 15—marking the third time BTC China has extended the ongoing bitcoin and litecoin withdrawal on its platform.

Considered to be one of China’s “Big 3” exchanges, BTC China announced early this month that it will subject all bitcoin withdrawals to a 72-hour review as it upgrades its internal systems. Days later, the 72-hour delay was upped to 10 days.

This time, BTC China said it plans to continue the audit of its system.