link ref :
requirement :
install font :
install MiFit and Sync. with Amazfit Bip
update lastest firmware
install gadgetbridge (install from F-droid) :
upload font "Mili_chaohu_uni.ft" to your phone
use File Manager Open file Mili_chaohu_uni.ft
choose "FW/App installer" option
tap "install" and wait
can uninstall gadgetbridge when success
Pls. see link ref above.
Cr. :