Isn't the BJv2 emulator should boot into "wellcome" screen? it didn't now.

is the emulator working?

Yes. At some point I guess you ended up deleting all the code from it. Just paste Bangle.factoryReset() on the left-hand side and you'll be fine.

without it i cant test the soft reboot app....

Sending E.reboot() or fiddling with the watchdog won't work in the emulator anyway - it doesn't emulate hardware at that low a level.

may be hope later unicode will be implemented.

UTF8 is implemented on Bangle.js 2 now. It's just right now we don't have any fonts that use it.

If someone came up with a PBF-format font that had the Chinese unicode characters in then you might be ok (although I'm not 100% sure Gadgetbridge will forward them to Bangle.js) - but there are quite a lot of characters to handle!

It's been on my list to do but actually surprisingly few people have seemed bothered by it.