Singapore PR China passport to enter Macau fr HK and enter HK again

Jenny, actually, you don’t need an entry permit for Macau or HK if you travel like that. Because you hold Singaporean permanent residence, you can enjoy free entry to Macau for a stay for not more than 7 days.
If you enter HK and then go to Macau, you can stay in HK for not more than 7 days also.
After entering HK again from Macau, if you will fly to Singapore or other countries, you can stay there freely for 7 days once again.

Hi Yvonne, thanks for your reply, if I will enter HK fr Macau on 15 Oct and leaving HK on 22 Oct to Singapore, it will be consider 8 days and will need a HK entry permit already?

You can contact with Chinese embassy of China in Singapore or HK immigration department to confirm that.