At the risk of turning the thread into a definition battle, AIUI, “genocide” often is considered to be broad enough that the act of trying to wipe out a group’s identity is often classified as genocide, just a milder form of it. In other words, you can commit genocide without actually killing someone.
It would be like as if the United States tried to erase “black identity” and henceforth passed laws that nobody was allowed to have their hair done in cornrows and dreads, wear Air Jordans, rap, wear hoop earrings, speak Ebonics or “talk in a black way”, etc. basketball was discouraged, Beyonce’s music was banned, - anything that indicated “blackness.” (I apologize for crude broad-brush stereotyping but you get the idea.) And black people were to be constantly monitored by their white minders, and also put into reeducation camps where they would learn how to be “whiter.” Nobody would be getting killed, but an entire culture would be getting wiped out.
That’s what China is aiming for with the Uighurs. They want to erase the Uighur culture to the point where the only thing that makes them different from the Han is their facial features and skin color, but they’d be essentially identical in every other way.