do I carry canser drug with me without prescription for my Friend?

You'd better have a doctor's prescription. If not, I think you shouldn't take too many drugs. You know, I read that a Chinese tour guide bought 240 bags of cancer drugs and took them into PRC. Unfortunately, he was caught. The customs confisticated 210 bags and returned 30 bags to him. According to the customs, they returned 30 bags based on the drug usage purpose.

Therefore, I personally think that you should not take more than 30 bags.