The ceiling metal mesh and what looks to be plaster, a thick plaster. I'm going to replace when I tore out with sheetrock oh, that'll still leave a nice Gap to fill in. I never work with mesh and plaster before let alone ever seen it installed on a ceiling. I'm at a standstill with how to approach this obstacle. Any suggestions are welcome, thanks in advance.https://photos.app.goo.gl/kwa1ubFDM95dbMX87