Shijian 21 - CZ-3B/G2 - Xichang - 24 October 2021 (01:27 UTC)

[limen4]

In another thread I already wrote about the mysterious re-designation of Shijian-17-02 and Shijian-17-03 into Shiyan-12-01 and Shiyan-12-02. Now based on another commemorative cover I learned that a similar re-designation occured before launch of Shijian-21. His orginal name was Shiyan-11. Under those name a satellite was finaly sent into orbit one month later on board a KZ-1A launcher.
It is likely that Shijian and Shiyan are only cover designationas whereas their realy names remains in the dark.

[btt]

Hey limen4, could you repost the earlier message you reference?  I can't find it.