How much does it cost to call China from Peru's mobile phone? What about the fixed line?

I'm studying in Peru now, so we don't have to call China by cell phone. This is more expensive. You can buy 20 or 25 calling cards in China after you arrive in Peru. It's cheap to call China with this phone. You can play for one or two hundred minutes. But you must bring a domestic mobile phone. You can use it here or receive domestic short messages, but the short messages you send are not available in China. . .

1 cable =2.25 RMB.