[FooBarWidget]

He did make references to API documentation on how to transfer a window from one device to another. It's too bad he didn't demonstrate it. I would love to see a follow up demonstration.

EDIT: apparently there is a demonstration video here: https://news.ycombinator.com/item?id=27368995

[throwaway4good]

The guy's channel is all technical videos on HarmonyOS on phones and iot-devices:

https://space.bilibili.com/455592866

Unfortunately, the video I linked to appears to be the only one in English.