This seems absurd. I think I will wait a few more weeks and then request a charge-back from my Credit card company. Don't go wasting any more time filing a lost package claim with the post office. Let the seller deal with them.

2020-11-27 20:41:38 Changsha Package Received from shipper
2020-11-27 23:31:39 Changsha Depature from Local Sorting Center
2020-11-27 23:36:04 Changsha Arrival at Regional Sorting Center
2020-11-30 23:01:08 Changsha Departure from Regional Sorting Center
2020-12-01 22:40:13 Beijing Arrival at Regional Sorting Center
2020-12-02 14:53:36 Beijing Dispatched from Office of Exchange
2020-12-02 14:59:07 Beijing Dispatched from Office of Exchange
2020-12-03 00:52:17 Beijing Departure from Regional Sorting Center
2020-12-18 02:01:41 Beijing Handed over to Forwarding Agent for Transit
2020-12-18 02:03:36 Beijing Handed over to Forwarding Agent for Transit
2020-12-18 14:00:19 CA Received by the carrier
2020-12-20 21:37:51 CA Waiting for airline space