结果如图所示
box明明是设置成可断开的，但是在分栏里还是会莫名其妙地不断开或者是断开了但是本体还是换栏，很怪
代码：
```tex
\documentclass{article}
\usepackage[a5paper,left=0.7cm,right=0.7cm,top=0.5cm,bottom=0.9cm,footskip=6.9pt]{geometry}
\usepackage{multicol}
\usepackage{tcolorbox}
\usepackage{lipsum}
\usepackage{fontspec}
\setmainfont{Noto Sans}
\def\@textbottom{\vskip \z@ \@plus \textheight}
\setlength{\parskip}{0pt plus 0.00001pt}
\usepackage{tcolorbox}
\tcbuselibrary{skins,breakable}
\renewtcolorbox{quote}[1][]{
enhanced jigsaw,
breakable,
size=title,
colback=red!5!white,
colframe=red!75!black,
fonttitle=\bfseries,
title=My breakable box,
pad at break=2mm,
break at=-\baselineskip/0pt,
height fixed for=middle,
%breakable,
%enhanced,
%frame hidden,
%colback=white,
left=0.5em,
right=0pt,
top=0pt,
bottom=0pt,
sharp corners,
before skip=0.5\baselineskip,
after skip=0.5\baselineskip,
%overlay={
%\draw[line width=0.3pt, black]([shift={(0.5em, -0.5em)}]frame.north west) -- ([shift={(0.5em, 0.5em)}]frame.south west);
%},
%parbox=false,
#1
}
\tracingpages=4
\tracingoutput=4
%\tracingall
\setcounter{tracingmulticols}{4}
\begin{document}
\fontsize{12pt}{0.1}
\selectfont
\begin{multicols}{2}
\message{难堋标签: 1}
\begin{quote}
QUOTE 1:
\lipsum[1]
ENDQUOTE
\end{quote}
\message{难堋标签: 2}
\begin{quote}
QUOTE 2:
\lipsum[2]
ENDQUOTE
\end{quote}
\message{难堋标签: 3 Norm}
%\lipsum[3]
%(3). Par
%.
\message{难堋标签: 4}
\begin{quote}
QUOTE 4:
\lipsum[4-5]
ENDQUOTE
\end{quote}
\message{难堋标签: 5 Norm}
(5) \lipsum[3]
\message{难堋标签: 6}
\begin{quote}
QUOTE 6:
%\lipsum[6]
\lipsum[6-7]
ENDQUOTE
\end{quote}
\message{难堋标签: 7}
\begin{quote}
QUOTE 7:
\lipsum[7]
ENDQUOTE
\end{quote}
\message{难堋标签: 8 Norm}
(8)
\lipsum[10-20]
\end{multicols}
\end{document}
```