I have returned a parcel from Ireland to China and I had the person receiving the parcel check on its status and they have been told that the parcel is lost. How do I claim for compensation as this is €70 I expect to recieve back as it was sent tracked and made it to China and lost by the post office not me?

I’ve ordered a parcel from China using China post, since then it arrived in Australia but now they are unable to locate it reporting its lost. They told me to notify China post about what’s the next step to take since my parcel is considered lost. Tracking number is LX213545510CN

Hello,
My name is Gary Walker. My parcel has been stuck on Aircraft Arrival since July 24,2024. It is now September 4th. Where is my package or is it lost? If you all have my package can you all hurry it’s been in transit for 50+ days. If it’s lost can you all please marked it lost and tell Sugargoo.

Thanks