China's central bank pumped 840 billion yuan (129 billion U.S. dollars) into the market this week to ease liquidity.

The People's Bank of China (PBOC) conducted 50 billion yuan and 130 billion yuan on Friday and Thursday in seven-day reverse repos.

Both injections were priced to yield 2.25 percent, unchanged from Wednesday's injection of 210 billion yuan and Tuesday's injection of 180 billion yuan, according to a PBOC statement.

The move followed a net injection of 270 billion yuan on Monday, said the PBOC.