Please check this Tracking LO402617936CN

Tracking shows a state that I don't know could you tell me what happens?

Hello,
Tracking package LL797248463CN (it contains a bicycle part) on 17track shows repeated "Beijing, Beijing Exchange Station Return" (4 times) and "Beijing, Beijing Speed International return, note: security return". What could be going on here?

2019-11-06 19:10 Beijing, Beijing Exchange Station Return
2019-11-06 07:43 Beijing, delivered to air transport
2019-11-05 20:59 Beijing, leaving the Beijing Exchange Station, the next stop ,Beijing Exchange Station
2019-11-05 17:28 Beijing, Beijing Speed International return, note: security return
2019-11-02 18:53 Beijing, Beijing Exchange Station Return
2019-11-02 06:24 Beijing, delivered to air transport
2019-11-01 17:35 Beijing, Beijing Speed International return, note: security return
2019-10-30 15:11 Beijing, Beijing Exchange Station Return
2019-10-30 06:22 Beijing, delivered to air transport
2019-10-29 15:13 Beijing, Beijing Speed International has been exported directly sealed
2019-10-29 14:27 Beijing, Beijing Speed International return, note: security return
2019-10-27 18:19 Beijing, Beijing Exchange Station Return
2019-10-27 08:07 Beijing, delivered to air transport
2019-10-26 19:39 Beijing, arriving at Beijing Exchange Station
2019-10-26 14:46 Beijing, Beijing Speed International has been exported directly sealed

Trackng number: RB833324187SG
Package status: In transit
2019-11-22 02:24, Beijing, Beijing Post International return, note: security return
2019-11-21 23:15, Beijing, leaving the Beijing Exchange Station, the next stop ,Beijing Post International (via transfer)
2019-11-18 08:16, Beijing, delivered to air transport
2019-11-18 08:16, Beijing, delivered to air transport
2019-11-17 09:22, Beijing, Beijing Post International has been exported directly sealed
2019-11-17 09:22, Beijing, Beijing Post International return, note: security return
2019-11-16 06:47, Beijing, delivered to air transport
2019-11-16 06:47, Beijing, delivered to air transport
2019-11-15 13:21, Beijing, Beijing Post International has been exported directly sealed
2019-11-15 13:21, Beijing, Beijing Post International return, note: security return
2019-11-14 07:06, Beijing, delivered to air transport
2019-11-14 07:06, Beijing, delivered to air transport
2019-11-13 02:57, Beijing, Beijing Post International has been exported directly sealed
2019-11-13 02:57, Beijing, Beijing Post International return, note: security return
2019-11-12 21:30, Beijing, Beijing Exchange Station Return
2019-11-12 09:05, Beijing, delivered to air transport
2019-11-11 13:13, Beijing, Beijing Post International has been exported directly sealed
2019-11-11 13:13, Beijing, Beijing Post International return, note: security return
2019-11-11 02:59, Beijing, Beijing Exchange Station Return
2019-11-10 06:44, Beijing, delivered to air transport
2019-11-10 06:44, Beijing, delivered to air transport
2019-11-09 12:44, Beijing, Beijing Post International has been exported directly sealed
2019-11-09 12:44, Beijing, Beijing Post International return, note: security return
2019-11-09 03:36, Beijing, Beijing Exchange Station Return
2019-11-08 07:23, Beijing, delivered to air transport
2019-11-08 07:23, Beijing, delivered to air transport
2019-11-07 03:31, Beijing, Beijing Post International has been exported directly sealed
2019-11-07 03:31, Beijing, Beijing Post International return, note: security return
2019-11-06 22:58, Beijing, Beijing Exchange Station Return
2019-11-06 07:45, Beijing, delivered to air transport
2019-11-06 07:45, Beijing, delivered to air transport
2019-11-05 12:54, Beijing, Beijing Post International has been exported directly sealed
2019-11-05 12:54, Beijing, Beijing Post International return, note: security return
2019-11-05 01:47, Beijing, Beijing Exchange Station Return
2019-11-04 06:00, Beijing, delivered to air transport
2019-11-03 12:37, Beijing, Beijing Post International has been exported directly sealed
2019-11-03 12:37, Beijing, Beijing Post International return, note: security return
2019-11-03 06:31, Beijing, Beijing Exchange Station Return
2019-11-02 06:26, Beijing, delivered to air transport
2019-11-02 06:26, Beijing, delivered to air transport
2019-11-01 01:28, Beijing, Beijing Post International has been exported directly sealed
2019-11-01 01:28, Beijing, Beijing Post International return, note: security return
2019-10-30 14:33, Beijing, Beijing Exchange Station Return
2019-10-29 07:34, Beijing, delivered to air transport
2019-10-29 07:34, Beijing, delivered to air transport
2019-10-28 12:45, Beijing, Beijing Post International has been exported directly sealed
2019-10-28 12:45, Beijing, Beijing Post International return, note: security return
2019-10-28 03:52, Beijing, Beijing Exchange Station Return
2019-10-27 08:15, Beijing, delivered to air transport
2019-10-27 08:15, Beijing, delivered to air transport
2019-10-26 14:13, Beijing, Beijing Post International has been exported directly sealed
2019-10-26 14:13, Beijing, Beijing Post International return, note: security return
2019-10-26 03:05, Beijing, Beijing Exchange Station Return
2019-10-25 17:13, Beijing, delivered to air transport
2019-10-25 17:13, Beijing, delivered to air transport
2019-10-25 13:25, Beijing, delivered to air transport
2019-10-24 15:46, Beijing, Beijing Post International has been exported directly sealed
2019-10-24 15:46, Beijing, Beijing Post International return, note: security return
2019-10-24 04:00, Beijing, Beijing Exchange Station Return
2019-10-23 08:10, Beijing, delivered to air transport
2019-10-22 19:47, Beijing, arriving at Beijing Exchange Station (via transfer)
2019-10-22 15:38, Beijing, Beijing Post International has been exported directly sealed
2019-10-20 19:05, Beijing, delivered to air transport
2019-10-18 10:58, Singapore, Singapore has exported directly
Origin:
2019-10-21 00:00, Arrival at Processing Center (Country code: CN)
2019-10-21 00:00, Arrival at Destination Post (Country: CN)