Post office surface mail is the cheapest, estimated 10 pounds about 12 ~ 15 yuan. 5 ~ 10 days to arrive.
You can also choose the postal EMS, than SF price is about the same but slow, but the advantage is that the business outlets cover a large area. The customer service phone number 11185.
Or choose Shentong, Zhongtong and other couriers. Generally cheaper than SF about 20%, but the speed to be slow on one to two days, and different areas outlets are not necessarily complete.
Mailing things of course should pay attention to comply with the relevant regulations, especially now that the Paralympic Games is not yet over, especially powder and liquid things. In addition, depending on what you're mailing, you need to make sure it's waterproof and shockproof and other packaging.