Redmi has teased a new promotion for the Note 8 Pro that ties in with the movie Terminator: Dark Fate. It will be available via the brand's Spanish division from October 29, 2019, and appears to consist of the offer of an appropriately-branded case with every sale of the standard 6GB model of the phone.
https://www.notebookcheck.net/The-new-Terminator-movie-sponsors-a-special-sales-event-for-the-Redmi-Note-8-Pro-in-Spain.440422.0.html