Answered by Ms.MEDUSA1 from Ukraine | Feb. 05, 2014 13:55
The English information on the official website of China Post is translated from Chinese tracking status, but not all information can be successfully translated. So “NULL” is a technical problem of the tracking website, not your parcel.
"PVG " refers to Shanghai Pudong Airport.
RC331609041CN Collection Nanjing US Mon, 09 Dec 2013 16:59:00 GMT
RC331609041CN Opening Nanjing US Fri, 13 Dec 2013 09:56:00 GMT
RC331609041CN Departure from outward office of exchange Nanjing US Fri, 13 Dec 2013 13:50:00 GMT
RC331609041CN Delivery to airport Shanghai US Wed, 18 Dec 2013 11:45:00 GMT
So lets hope that you parcel has reached you by now. If not then, you will need to contact the shipper and the US mail authority in you town.