China Post final-mile handoff to USPS
Weave in "ISC inbound" naturally — last time I had a China Post order it sat at ISC inbound for like 5 days before moving. Once USPS picked it up, tracking number updates came steady. My stealth was on point with cheap items, so customs didn't bat an eye. Just don't panic if it shows no motion for a few days — that's usually the transit hub shuffle, not a lost package. Give it a week before you start worrying. It landed in 12 days total, which shocked me honestly.
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Most China-origin vendor packages travel via China Post and then hand off to USPS for domestic delivery. The mechanics of this handoff explain a lot of tracking behavior that seems mysterious without context.
How the handoff works
China Post ePacket and China Post Air Mail packages enter the US through one of several international mail exchange facilities — Los Angeles, New York, Chicago, Miami, and San Francisco are the primary entry points. At these facilities, the packages are sorted and handed to USPS for domestic delivery. USPS creates a new tracking record at this point, linked to the original China Post tracking number.
The tracking gap
Between departure from China and arrival at the US exchange facility, tracking often shows no updates for five to twelve days. This is not a problem — it reflects the consolidated air freight routing that does not scan individual packages in transit. The packages are in cargo holds as part of a consolidated freight shipment, not being individually tracked at each point.
After the handoff
Once USPS accepts the package at the exchange facility, tracking becomes more detailed. You will see facility processing events and eventually a delivery-to-route scan when your local carrier picks it up. From the US entry facility to delivery is typically two to five business days for ePacket class.
If your tracking shows the package departed China and nothing has happened for 14 days, the package is likely still in the pre-USPS transit phase. At 21 days with no US entry event, it is worth contacting the vendor. At 30 days, most vendors' reship policies activate regardless of tracking status.
China Post's domestic network feeds into USPS at specific international mail facilities, primarily in Los Angeles, New York, and Chicago. Packages that miss the direct USPS handoff sometimes route through a third-party consolidator before the final USPS entry scan, which creates tracking gaps that look alarming but resolve once the package reaches the USPS system. A package with no US entry scan at 21 days is worth flagging to the vendor; at 15 days, the gap is still within normal processing variation.