Please help me? What is this status? Was It returns to the seller?? I don't understand.

China Post tracking #LZ847606571CN
May 15, 2021 10:40am Item Presented to Customs Jinan
May 15, 2021 5:40am Departure from Regional Sorting Center Jinan
May 15, 2021 3:02am Arrival at Regional Sorting Center Jinan
May 14, 2021 7:30pm Departure from Regional Sorting Center BeijingCity
May 13, 2021 3:31pm Departure from Regional Sorting Center BeijingCity
May 12, 2021 3:31pm Returned BeijingCity
May 11, 2021 7:53pm Departure from Regional Sorting Center BeijingCity
May 11, 2021 6:47pm Returned BeijingCity
May 11, 2021 9:24am Received by the carrier
May 11, 2021 5:33am Handed over to Forwarding Agent for Transit BeijingCity
May 10, 2021 7:56pm Departure from Regional Sorting Center BeijingCity
May 10, 2021 7:35pm Dispatched from Office of Exchange BeijingCity
May 9, 2021 2:29pm Departure from Regional Sorting Center BeijingCity
May 9, 2021 7:31am Arrival at Regional Sorting Center BeijingCity
May 9, 2021 1:25am Departure from Regional Sorting Center Jinan
May 8, 2021 4:40pm Departure from Regional Sorting Center Jinan
May 7, 2021 8:32pm Arrival at Regional Sorting Center Jinan
May 7, 2021 7:09pm Depature from Local Sorting Center Jinan
May 7, 2021 7:04pm Package Received Jinan

Hi I have the following tracking number LV310161155CN. I have not got any updates sfter 12 days now. The last update was on november 27th saying tat it departed regional sorting center in Beijing City. It it lost already? Should I contact the vendor?

LS430178538CN is my tracking number.
is my package stuck in china? please let me know