I will jump in here and tell you what NOT to do ! Pull the trigger and make the hammer go in the "Up" position .
ALWAYS remove the rigger pin 1ST ! It is best if you can compress the trigger /hammer spring with your spare hand then use a punch to push out the trigger pin . This will free the trigger,hammer spring housing, hammer spring and hammer spring plunger . Now your are ready to remove the hammer pin ,same way push it out from left to right . This should make the hammer available then a gentle twist of the safety ,safety spring and the trigger gaurd .
DO NOT DO what I did once and remove the hammer pin 1st ,if you do you will be in for the fight of your life and you may never get it back together! You will curse and curse some more .
They sell a tool for this but I find that with practice ,this method works and is very easy ! Norinco trigger pins "**ck" and if you can find a USGI or USGI spec trigger pin your reassembly will be much easier !
I hope this helps ! Your friend in the U.S.
Mike