The People’s Bank of China (PBOC) set the USD/CNY reference rate at 6.3686 on Monday when compared to the previous fix and the previous close at 6.3692 and 6.3672 respectively.
In addition to the daily fix, Reuters also came out with the PBOC market actions while saying, "With 10 billion yuan worth of reverse repos maturing on Monday, China central bank injects 40 billion yuan on a net basis on the day."