This undated file photo shows the headquarters of the People's Bank of China, China's central bank, in Beijing, China. (PHOTO / XINHUA)

BEIJING - China's central bank pumped cash into the financial system through open market operations Tuesday to maintain liquidity in the market.

A total of 200 billion yuan (about 31.37 billion US dollars) was injected into the market via a medium-term lending facility, according to the People's Bank of China, the central bank.

Meanwhile, the central bank injected 10 billion yuan into the market through seven-day reverse repos at an interest rate of 2.1 percent

The funds will mature in one year at an interest rate of 2.85 percent.

Meanwhile, the central bank injected 10 billion yuan into the market through seven-day reverse repos at an interest rate of 2.1 percent.

The move was intended to maintain reasonable and ample liquidity in the banking system, the central bank said.

 READ MORE: China's central bank conducts 10 billion yuan of reverse repos

The MLF tool was introduced in 2014 to help commercial and policy banks maintain liquidity by allowing them to borrow from the central bank using securities as collateral.

A reverse repo is a process in which the central bank purchases securities from commercial banks through bidding, with an agreement to sell them back in the future.

China pursues a prudent monetary policy in a more flexible and appropriate way, according to this year's government work report.