I was double checking my poor Chinese with Google Translate and got cracked up by this one from Google: "anal anal M3s" - I think he is trying to say that both M3s and R3 have similar design philosophies, before going on to complain about the lack of Canjams/audio shows in Beijing:
https://imgur.com/htxv5IX
It could be simple mistype due to pinyin input, for example 干干M3s, like a dry version of M3s.
But i am afraid we never know what does that really mean
And yes, interface is the strongest side of R3, it is very fast and very responsive, no any freeze so far.
Animation of changing volume was made in A&K style, but not that fancy though.
Appearance is good as well, perfect build quality, great touchscreen and display as well.
The weakest side is sound - inclined to warm side with poor resolution and reduced highs. Probably there could be some people who like such sound sig, unfortunately i am not one of them, it seems to me dull, flabby and boring. Someone from Chinese on jd.com wrote R3 sounds no better then a smartphone, another one - that sound is quite far from R6 level. And as it is said at screenshot above - 也不是想听 - not wanted to listen.
I took it as transport to Cozoy Takt Pro at first place, and it matches generally well, paired and controlled with no issues, sounds great too. But. Takt Pro is supposed to suck out all of R3 power just for 3 hours and i am not very pleased with such short time. Looking forward to battery will get in it's proper shape.
I was also intending to use DLNA, but it seems this feature is not completed yet. There is Wi-Fi, as declared, scanning is good, joining to Wi-Fi net is also no problem, there is even DLNA check box, i can turn it on and of and on again, but that's it.
I think it will be fixed soon, not a big issue, since the software seems to be what Hiby are really good at (unlike sound)
Also on a bright side - Bluetooth seems pretty fine (apt-X or LDAC is not available to confirm, it said "High quality" in BT section), pairing with other device goes with no issues, Hiby Link - high five!
PS Bought it at jd, own one day and half, listen from 2,5" output with Dunu Falcon C (Mee P1 is very far from R3's capability)