在乳胶中创建带有交叉箭头的表格

Question

我想要一张使用 LaTeX 制作的表格，其格式如下图所示。如能得到任何帮助，我将不胜感激！

以下是我尝试过的。

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{calc, matrix, positioning}
\begin{document}
\tikzset{c-rectangle2/.style={rectangle, rounded corners, minimum
width=2cm, minimum height=1cm,text centered, text width = 5cm, draw=black,
fill=white},
arrow/.style={ultra thick,->,>=stealth}}
\begin{figure}[htb]
\centering
\begin{tikzpicture}[node distance = 2cm]
    \node (start) [c-rectangle2] {zz + yy};
\node[below=1cm of start] (tabA){\begin{tabular}{|l|c|}
\hline
A & B \\\hline
aa & 20\\
bb & 30\\
cc & 40\\
dd & 50\\\hline
\end{tabular}};
\draw[arrow] (start) -- (tabA);
\node[right=1cm of tabA] (tabB){\begin{tabular}{|c|}
\hline
C \\ \hline
10\\
10\\
10\\
10\\\hline
\end{tabular}};
\node[right=1cm of tabB] (tabC){\begin{tabular}{|D|}
\hline
D \\ \hline
5\\
5\\
5\\
5\\\hline
\end{tabular}};
\node (box1) [c-rectangle2,below of=tabA, below=0.5cm] {
\begin{itemize}
    \item [$-$] a
    \item [$-$] b
\end{itemize}};
\node (box2) [c-rectangle2,right = 1cm of box1] {
\begin{itemize}
    \item [$-$] a
    \item [$-$] b
\end{itemize}};
\end{tikzpicture}
\end{figure}
\end{document}