I have 3 packages coming but they have all stopped being tracked and I am concerned that they have become lost. Could you please help?

The 3 tracking numbers are:
LZ227334745CN
LZ238754258CN
LZ245695833CN

My concern is that the last time LZ227334745CN was tracked was on the 05th of August, which was over 2 weeks ago. As you can understand I am concerned as to where this package is.

My other 2 packages have also not been tracked for a week.

If you could let me know what this means, that would be much appreciated.

The parcel has not been tracked since March 11, 2024. how do I find out where it is and when it will arrive?

I was told by New Zealand post that parcel with tracking number RI......CN cannot be tracked in New Zealand. So, I am able to track it only while it is in China. These parcels for some reason have a high loss rate, and I am wondering if they are being stolen. On the other hand, parcels with tracking number RF.....CN are tracked end to end. Can you tell me what is a difference between RI and RF parcels please, and is it true that RI parcels cannot be tracked outside China. I do not understand how one letter would make a difference. Thank you.