What´s mean RC044270182CN 2013 NULL PEK BR 20131219 0554?

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 website, not your parcel.

This is the status of this tracking number.

RC044270182CN Collection Beijing BR Tue, 03 Dec 2013 18:28:00 GMT
RC044270182CN Departure from outward office of exchange Beijing BR Wed, 04 Dec 2013 07:49:00 GMT
RC044270182CN Opening Beijing BR Fri, 06 Dec 2013 09:49:00 GMT
RC044270182CN Delivery to airport Beijing BR Thu, 19 Dec 2013 05:54:00 GMT

Check with your mail authorities. Maybe your package is already in your country / town.