An exciting leak from the beta build for Version 5.6 hints that Genshin Impact could be introducing a new Elemental Reaction ...

She is one of the best support units from the element, as she can apply Dendro on enemies from off-field to enable a variety of elemental reactions. Moreover, she can even buff her teammates ...

Introduced in version 3.0, Bloom is an elemental reaction in Genshin Impact that can be triggered by combining the Dendro and Hydro elements. Doing so creates a seed on the field called a Dendro Core.