(Yicai Global) Aug. 21 -- The People's Bank of China net withdrew CNY40 billion (USD5.7 billion) from the nation's financial system via open market operations today.

The central bank conducted a seven-day reverse repo worth CNY60 billion this morning, with the interest rate unchanged from yesterday at 2.55 percent. Some CNY100 billion worth of the same instrument expired today.

The bank net withdrew CNY10 billion yesterday and the same amount on Aug. 19.