Here is a simple guide on how to obtain the Crescent Moon Ang Pau.
A. Babysitting Quest for Crescent Moon Ang Pau
Note: The monster’s that you are hunting in these quest lines may drop unique items that are useful for the Rampage quest so if you are planning to do the Rampage quest in the future, it is advised to keep those unique items for the rampage quest line here : [QUEST] A guide for the Rampage quest
Step 6 : Find Talib at Clauzhuz/Vitory to claim a reward
You may also obtain Crescent Moon Ang Pau through monster drop.
These group of monsters has a chance to drop Crescent Moon Ang Pau:
Mini Flame Demon
Mini Lion Queen
Mini Merman King
Mini Queen Of Pain
Mini Three Headed Queen
Mini Skeleton King
Mini Gorep King
Mini Elemental God
Queen Of Pain
Three Headed Queen