The Xiaomi Mi 11 Ultra is a super-flagship smartphone rumored to launch later in 2021. It is touted to improve on the existing Mi 11 in a number of ways, one of which is a step up to blazing fast 120W charging. A new leak suggests it might have a new, first-party gallium nitride (GaN) power brick with which to do so.
https://www.notebookcheck.net/Xiaomi-is-touted-to-launch-a-new-120W-GaN-charger-soon.525588.0.html
Incredibly meaningless, actual tests show that all these fast charging technology rating from 44W to 65W reach 90% within 10min of each other, there's no significant difference in reaching 50% either.