Hi, Can anyone help telling me what is happening with RB638138138CN? It seems long overdue

The last known status of this package is as follows.

Usually it takes 7 – 20 working days for AIR and SAL mails, and 40 – 70 days for a surface mail. Should there be any delay, it would be as long as 180 days.
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RB638138138CN Collection Hangzhou BR Mon, 09 Dec 2013 16:56:00 GMT
RB638138138CN Departure from outward office of exchange Hangzhou BR Tue, 10 Dec 2013 10:38:00 GMT
RB638138138CN Delivery to airport Beijing BR Fri, 13 Dec 2013 06:33:00 GMT
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Do make an effort to check the details of your shipment with the local Mail Authority in your Town/ Country.
Perhaps this item it will reach you soon.