I think it is doable but it will be very tight. CZ have moved to the new terminal T2 while KA is still in T1. And those two terminals are somewhat far from each other (requires a shuttle bus or a one stop metro).

Maybe before departure let KA/CX make a note in your PNR saying you are coming in from MNL on CZ, OLCI and print the boarding pass (as of last time I travelled there CAN doesn't support mobile boarding pass). After you disembark make you APEC card visible to the immigration officials and you should be cleared through the diplomat lane in no time. If you have some spare change in CNY (or WeChat wallet) I recommend you take the Metro one station from Airport north to Airport south.