The next version of it, HarmonyOS NEXT is microkernel based, and they have two new languages of their own.

ArkTS, inspired in Typescript and similar nodejs runtime.

Naturally due to performance problems, they decided to come up with another one, also Typescript inspired, but ahead of time compiled, GC and effects.

It is called Canjgie.

This naturally is a big effort rebooting the whole ecosystem, it only works because Huawei could focus on the Chinese market after losing Android.