\documentclass[a4paper,11pt,xelatex,ja=standard]{bxjsarticle}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{ascmac}
\usepackage{bm}
\usepackage[dvipdfmx]{graphicx}
\usepackage{here}
\usepackage{physics}
\usepackage{siunitx}
\usepackage{comment}
\title{Example}
\author{Author}
\date{2020-01-01}
\begin{document}
\maketitle
\begin{align}
e^{i\pi} &= \cos{\pi} + i\sin{\pi}\\
&=-1
\end{align}

\begin{table}[hbtp]
\centering
\caption{example table}
\begin{tabular}{ccc}
\hline
test1 & test2 & test3 \\
\hline \hline
$\SI{163}{cm}$ & $\SI{171}{cm}$ & $\SI{178}{cm}$ \\
\hline
\end{tabular}
\end{table}

\textrm{Sub document}

\end{document}