\makeatletter
	\let\@ldLabel\label
	\let\@ldCref\cref
	
\def\useLocalLabels{%
	\def\label##1{\expandafter\@ldLabel{XX##1}}%
	\def\cref##1{\expandafter\@ldCref{\ChapterPrefix##1}}%
}

%\show\label
\show\newlabel
\show\@newl@bel 
%\useLocalLabels
%\show\label
\show\@ldLabel
%\show\newlabel
%\show\cref
\makeatother
