Chinese characters not displayed when using CJK

The following minimal example does not show all the five characters in Chinese. How can I fix that?

documentclass{article}
usepackage[utf8]{inputenc}
usepackage{CJK}
begin{document}
begin{CJK*}{UTF8}{bsmi}你有问题吗？end{CJK*}      
end{document}

The output of file -i is text/x-tex; charset=utf-8 which looks reasonable to me. My file is compiled via pdftex:

This is pdfTeX, Version 3.14159265-2.6-1.40.20 (TeX Live 2019/Debian) (preloaded format=pdflatex)
restricted write18 enabled.
entering extended mode
(./sample.tex
LaTeX2e <2020-02-02> patch level 2
L3 programming layer <2020-02-14>
(/usr/share/texlive/texmf-dist/tex/latex/base/article.cls
Document Class: article 2019/12/20 v1.4l Standard LaTeX document class
(/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo))
(/usr/share/texlive/texmf-dist/tex/latex/base/inputenc.sty)
(/usr/share/texmf/tex/latex/CJK/CJK.sty
(/usr/share/texmf/tex/latex/CJK/mule/MULEenc.sty)
(/usr/share/texmf/tex/latex/CJK/CJK.enc))
(/usr/share/texlive/texmf-dist/tex/latex/l3backend/l3backend-pdfmode.def)
(./sample.aux) (/usr/share/texmf/tex/latex/CJK/UTF8/UTF8.bdg)
(/usr/share/texmf/tex/latex/CJK/UTF8/UTF8.enc)
(/usr/share/texmf/tex/latex/CJK/UTF8/UTF8.chr)
(/usr/share/texmf/tex/latex/CJK/UTF8/c70bsmi.fd)
(/usr/share/texmf/tex/latex/CJK/UTF8/c70bsmi.fdx) [1{/var/lib/texmf/fonts/map/p
dftex/updmap/pdftex.map}] (./sample.aux) )
(see the transcript file for additional information)</usr/share/texmf/fonts/typ
e1/arphic/bsmiu/bsmiu4f.pfb></usr/share/texmf/fonts/type1/arphic/bsmiu/bsmiu67.
pfb></usr/share/texmf/fonts/type1/arphic/bsmiu/bsmiuff.pfb></usr/share/texlive/
texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb>
Output written on sample.pdf (1 page, 14847 bytes).
Transcript written on sample.log.

I am looking for any means to display Chinese text in Latex file.

documentclass{article}
usepackage{fontspec}
setmainfont{Noto Serif CJK TC}
setsansfont{Noto Sans CJK TC}

begin{document}
Hello. 你有问题吗？

sffamily
Hello. 你有问题吗？
end{document}