I need to take a medication with me to China that is injected every two weeks (Humira).

Do you have any advice for me to get through customs with medication? I will be traveling with a prescription medication that is injected every two weeks. Since I'll be there a month I'll need two doses and two sets of syringes. It should be kept cool. I was planning on putting it in a small cooler and explaining that it was a prescription medication.