I didn't get one for this latest shipment. The one before that, it just showed up as an entry in the Chinese tracking details, something like "Package tendered to local delivery agent, tracking number XXXXXXX" So I guess there's no hard and fast rule? But it should keep updating within the Chinese number's tracking details, this latest one did all the way up to delivery, though it seemed. Took about three days once DHL had it:
6/18: ARRIVAL DESTINATION DHL ECOMMERCE FACILITY
6/18TENDERED TO DELIVERY SERVICE PROVIDER, ALLOW 1-3 DAYS FOR UPDATES FOR PACKAGES WITHIN THE US
6/19: PROCESSED THROUGH USPS SORT FACILITY
6/20: ARRIVAL AT POST OFFICE
6/20: OUT FOR DELIVERY
6/21: DELIVERED [FRONT DOOR/PORCH]
All within that 17Track site that LT Cave links to for tracking (city names were included, I just deleted them).