I plan on travelling for a vacation to China in March with my partner, i am Australian (passport) and my partner is French (passport).

Good afternoon, i hope you are able to assist me with my question.
I need to organise it for Indonesia, as we are travelling there first.
I understand that i am to hold a travel ticket to China before applying for it, how long does it take, how much does it cost ???
Any information that you are able to forward me would be greatly appreciated.
Kind regards Jenni