USD/CNY is the onshore yuan. Its permitted to trade plus or minus 2% from this daily reference rate.
CNH is the offshore yuan. USD/CNH has no restrictions on its trading range.
A significantly stronger or weaker rate than expected is typically considered a signal from the PBOC.
The previous close was 6.3695
The PBOC inject 20bn yuan via 7 day reverse repos (rate remains at 2.1%)
- zero yuan mature today
- thus net injection of 20bn yuan on the day