They are China Post ordinary packages. This kind of package couldn't be tracked after leaving the first station of China or leaving China. So, you couldn't get more update now.
You'd better open a dispute if you couldn't get them in time.
I'm from Argentina. I bought an item on AliExpress that was picked up on May 6 15:52:53 (GMT+8), on May 9 it was "Shipped by air" (according to AliExpress site), but then the tracking info stopped until today and it says "Loading completed insorting center". So... what's the real status? The tracking number is RE067349115CN
Package is being delivered UU309170552CN The plane arrives at the port. China UPDATE STATUS Shipper Address: China Delivery Service: China Post Aliexpress Standard Shipping Yanwen Sunyou Canada Post Change Receiver Address: Canada Weight: — Days en route: 40 Estimated time of delivery 8 - 20 December
They are China Post ordinary packages. This kind of package couldn't be tracked after leaving the first station of China or leaving China. So, you couldn't get more update now.
You'd better open a dispute if you couldn't get them in time.