Lava Release: Melting Apparition Technique: Flowing Crest

Attacking the opponent with torrents of water initially, Mei finishes them off using her ability to spit lava, she spits a small high force shot of lava from her mouth at a high speed.

Trivia

 * The last part of this technique's name maybe a pun, as it is one kanji short of, a type of volcanic rock.