It turns out that Xiaomi's latest tablets support a desktop mode, first seen in the Mi Mix Fold. The mode makes the Mi Pad 5 and Mi Pad 5 Pro easier to use in many ways, especially with a keyboard and mouse.
https://www.notebookcheck.net/The-Xiaomi-Mi-Pad-5-series-supports-the-desktop-mode-from-the-Mi-Mix-Fold.555772.0.html