I think this is the same as global rom.
I notice there are some posts above about their elderly having problem with the phone's battery running low fast. I have a few elderly at home also using xiaomi phones or other brands' smart phones, and they seem to not really understand the thing about switching off these when not in use. End up i have to "scare" them its like light switch, they will waste electricity if don't click. This way, they learn easier.
I am using the outdated china developer rom
5.10.08. I will always make it a habit to switch off data / wifi before i sleep, because i don't want people disturbing my sleep too. So far I always still get 100% battery life every morning when I wake up.
Btw, speaking about rom. I noticed that the global developer rom has
5.11.12 already. Now I am on china developer rom
5.10.08. If i download this global developer rom
5.11.12 from pc and copy paste onto phone directly to update, will it wipe out the phone's data???