The People's Bank of China (PBOC) injected 87 billion yuan ($12.84 billion) through reverse repurchase agreements in open market operations, including 65 billion yuan through seven-day tenor and another 22 billion yuan through 14-day tenor, according to an online statement.

The PBOC added that the move was to "maintain reasonably ample liquidity" in the banking system.

Market participants believed the higher cash injection was meant to help counteract higher cash demand ahead of the week-long Lunar New Year holidays, which starts on Jan. 21 this year.

With 14 billion yuan worth of such reverse repos maturing on Wednesday, the central bank injected a net 71 billion yuan on the day, making the first daily net fund offering this year.

($1 = 6.7770 Chinese yuan)

(Reporting by Winni Zhou and Brenda Goh; Editing by Jacqueline Wong)