Companies like OnePlus and Huawei love to run user-driven contests across social media platforms as a way to promote the brand and this seems to be no different.
https://www.notebookcheck.net/Own-a-Huawei-or-Honor-smartphone-Take-a-picture-with-it-for-a-chance-to-win-one-of-73-P40-Pro-smartphones.461727.0.html