[dTal]

This looks like an interesting and timely project, but the marketing is... weird. It's strange seeing an advertising tone in a github repository, and the blatant astroturfing in this thread fills me with distrust (some of the comments have now been deleted outright; there were half a dozen when I made this comment).

edit: and I just saw this: Is JingOS going to be opensource? And free software? Yes, JingOS will open-source step by step. We will update the Github project every half year. And JingOS will be free forever.

What is JingOS based on? JingOS is based on Ubuntu 20.04, KDE v5.75, Plasma Mobile 5.20.

I don't think that flies, if binary releases are more frequent than that. You can't just fork Ubuntu, make some changes, make a binary release, and keep the source to yourself for half a year; that's a GPL violation.