Group 1 - The People's Bank of China reported a net liquidity injection of 100 billion yuan through Medium-term Lending Facility (MLF) and 200 billion yuan through reverse repos, with no transactions in government bonds in the open market [1] - The liquidity tools mentioned include required reserve ratio adjustments, standing lending facility (SLF), MLF, pledged supplementary lending (PSL), and other structural monetary policy tools [3] - The open market operations consist of short-term reverse repos, buyout reverse repos, government bond transactions, and central treasury cash management [3]