hmm my flashing seems weird.. it's 30 mins in and counting...
1. did it keep rebooting??... i.e. u will feel vibration....
2. did you install twrp and flash from it??... it's prone to stuck at mi logo after flashing from what i read...
if no.1 is true, then your set is bootloop-ed...
else if no.2 is true, then i suggest you go clean installation....
else if both is false, tell us more.....
i have no experience on no.2... since I do use twrp before... mostly is flashing xiaomi.eu rom and updated roms.... my official global is via my own method... which means clean installation without twrp anymore...