The setup of the CBS also aims to encourage banks to replenish capital via perpetual bond issuance, the People's Bank of China said in a statement on its website.

Banks' perpetual bonds with ratings at no lower than AA will be included as qualified collateral for a medium-term lending facility (MLF), a targeted medium-term lending facility (TMLF), a standing lending facility (SLF) and re-lending, according to the statement.

(Reporting by Min Zhang in Beijing and Meg Shen in Hong Kong; Editing by Alison Williams)