afaik, google home can only be link to like 2 or 3 xiaomi types of device that targeted to be sold overseas if i not mistaken. it doesnt support all xiaomi device especially those imported from china devices. i would advice againts xiaomi smart home if u planning to use google home.

yea exactly. i find that xiaomi cannot handle complex scenario. they can only handle very very simple ones.

there is also a delay between command. i think they purposely add this in to stop a flood of instruction to their servers. let say u set turn off light + delay timer, once triggered, the light turn off and if within let say 1 min u walk into the room, the sensor dont wan to trigger the turn on light because of this. it will wait until about a minute or so only excuting next instruction. so for 1 min u in the dark. only after tht 1 min u hav to redo the trigger to move then only it start execute again. they dont even put it in queue.

its using gateway + motion sensor. still have delay. my gateway is version 2
because i need a delay longer than 30 min. motion sensor detect no motion up to 30 min only. anything above that need to add delay. but the delay command once queue cannot be un-queue by sensor motion again. so sometimes when i still in the room, the light turn off anyway

yea, there are so many out there made me confuse ..  where did you found those 100% compatible ?

that's why i saw Aqara some say can compatible wtih alexa/googe home with Region choose to other.

But i do not want to do double spending, hence, still digging around here.. haha..

What do you think about WPM ? they have zigbee gateway, some sensors and switches as well.

Nothing to do with the gateway. Only zigbee devices are connected to the gateway, like your door sensor
Bulbs, light strips are using wifi and connect to your router

Is it the server issue? Cause some devices only supported under China server while global version devices are not support under China server

oh your door sensor also Wifi boss
so your gateway not use at all.....

i have google around and found there is a mi home app that is modded by vevs. it help to "unlock" my roborock T6 which suppose to work only in Mainland.

But i am unsure about Smart Home Kit.