I will be traveling shortly to Mainland China. My travel partner has some prescription medications that may be banned from China and possibly Hong Kong. He has a valid current prescription and a current letter from a doctor to certify that he is currently under care taking these prescriptions which are legal in the US. This becomes a complicated situation because he has never been to Hong Kong or mainland China and there seems to be a lack of proper and clear information online. I attempted to call the Chinese embassy however they do not answer their phones and I have verified this to be the case. I do not want him to travel all that distance and have a major problem with authorities. I want to make sure to avoid any problems or issues that might arise. Any clear help is appreciated