Hi, my package has been showing 'Flight Departure' or 'Cleared and awaiting international departure' for 6 weeks now. Is it lost and should I call China Post or the seller?
LX277458362CN
Thank you very much.

Why is my package keep getting put onto different aircraft.
04-09 10:29
飞机到达进港
04-09 00:57
Flight Departure
04-06 20:58
飞机到达进港
04-05 20:54
Flight Departure
04-03 18:19
飞机到达进港
04-02 18:06
Flight Departure
04-02 11:18
口岸接收扫描
04-02 03:13
Flight Departure
04-01 10:59
Flight Departure
03-31 20:48
航空公司接收
03-29 07:41
航空公司接收
03-29 07:36
Handed over to Airlines
03-28 07:33
Departure from Regional Sorting Center
03-28 07:33
邮件到达处理中心
03-28 04:42
Dispatched from Office of Exchange
03-28 04:42
Item Returned from Customs?
03-28 03:27
Item Presented to Customs
03-27 20:44
Depature from Local Sorting Center
03-27 20:44
揽投配发
03-27 17:27
Package Received

I had a package sent to me on April 14th, through China EMS. It was collected on the 15th and despatched to the UK on the 17th, however the tracking site I was provided with and my local couriers tracking both have no updated since. I thought EMS was usually quicker than this and I looked it up to read that EMS from China to the UK usually takes 7-20 days, but my tracking has not updated in a month.
I found tracking websites that share more detailed information however this is what I get:
May 8, 2021 22:14 -Flight Departure
May 8, 2021 22:14 - Transiting via the transit Airport
May 9, 2021 21:10 - Flight Departure
May 10, 2021 12:02 - Flight Departure
May 12, 2021 15:16 - Flight Departure
May 13, 2021 00:07 - Flight Departure
May 14, 2021 09:00 - Flight Departure
May 15, 2021 09:44 - Flight Departure

Why has its flight departed so many times? What does this mean. Should I be concerned about my parcel yet?? Or is taking this long normal for EMS