[Tex/LaTex] title chapter in middle of page latex

chapterstitlesecvertical alignment

I try to put title of my chapter in middle of page, so google it and i finish with this,

 {\normalfont\huge\bfseries\centering}{\chaptertitlename\ \thechapter}{20pt}{\Huge}

okay that make all chapter title in middle, but no, I want to make all chapter title in middle except introduction and conclusion and title of table of contents, list of figures


Best Answer

More search to find the solution, here , and also with explanation thanks to @Stefan Kottwitz it was clear and simple.

just change in fancychapterstyle \titlespacing*{\chapter}{0pt}{50pt}{40pt} to \titlespacing*{\chapter}{0pt}{250pt}{40pt} to make it center vertically and follow the explanation of @Stefan Kottwitz