The EMS tracking is non responsive once its left china. I use USPS tracking website (same #) and it is really accurate. And It is like 1-2 hour to clear the "Inbound to customs" status
I know. I asked that because sometimes, USPS does not update the tracking status, or just simply forget to scan packages.
And that about 1-2 hours to clear the inbound to customs status is bull, mine entered yesterday at 5:15am into that status, and has not changed since. If it changed that fast on your case, they you're part of the lucky few.
(I hope I didn't sound like an ass LOL)