Hi Maria,

It's sent by using China Post Ordinary Small Packet Plus which is a cheap service of China Post. China Post doesn't provide tracking service for it after it arrives in Sydney. So, you can't get more update after May 31. It usually takes about 60-90 days to be delivered. If you couldn't get it in time, contact the seller to give you a solution.

Number: UU074198190CN
Package status: In transit
Country: China -> Australia
2021-05-31 13:00 Sydney, arrive at the place of arrival
2021-05-21 18:26 The airline departs
2021-05-20 13:23 Airlines receive it
2021-05-20 09:57 Shanghai, has been delivered to the carrier transport
2021-05-03 17:50 Shanghai, plans to deliver air transport
2021-05-02 23:02 Shanghai, leave shanghai international mail processing center, next stop "Shanghai international mail exchange station" (transit)
2021-05-02 01:44 Shanghai, Shanghai International Mail Processing Center has been exported straight
2021-05-02 01:14 Shanghai, Shanghai International Mail Processing Center has been exported straight
2021-05-01 18:35 Shanghai, Arrival at Shanghai International Mail Processing Center (via)
2021-05-01 18:26 Shanghai, leave the International Small Package Business Processing Center of the Delivery Division, next stop Shanghai International
2021-05-01 17:45 Shanghai, "Delivery Division International Small Package Business Processing Center" has been received