why does it say pvg? should i be worried?

Question

This package RD185584055CN has been saying status NULL location PVG for a few weeks.

Ms.Catherine · Answer

RD185584055CN Delivery to airport Shanghai IE Sun, 18 May 2014 23:00:00 GMT PVG stands for Pudong Airport in Shanghai. Your parcel left Shanghai on May 18. And the status changed into NULL when it was sent out since China Post can't provide further tracking information.

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Why does it say PVG? Should I be worried?