Hello, for your information, there are also two threads for this phone on XDA developers.
I've asked more information about the so called multi-lingual rom at cect-shop directly, they kindly answered. Unfortunately, the link to the rom they gave me is pointing to the right thread (from a chinese forum), but the dowload link into the thread is pointing to another file.
I've then done some research and found several links in Chinese forums. You can have a look at the two XDA developers topics below.
I am really interested in buying this phone, but it'll be without me if we can't tweak the rom. Stuff dedicated to Chinese market is always full of crap/spyware/bloatware calling home, this is a big no go for me.
Regarding bootloader unlock, given the bunch of custom roms available for hisense devices to be flashed with the QPST tool under EDL mode, I'd agree as well with the person who wrote here previously that this device may likely be unlocked by default.
Now challenge is to grab some rom .zip and see if it can be tweaked.
See below the XDA threads.
https://forum.xda-developers.com/and...se-a5-t4058081
https://forum.xda-developers.com/pro...e-ink-t4067825