This time, my procedures are the follows:
# apt-get install scim scim-chinese scim-tables-zh
# vim /etc/X11/Xsession.d/95xinput
/usr/bin/scim -dAnd didn't get what I want, so I kept tring
# vim /etc/X11/xinit/xinput.d/all_ALL
XMODIFIERS="@im=SCIM"Then the SCIM setting had been completed.
Finally, I installed the Japanese and Chinese imput methods to which I used.
# aptitude install scim-anthy scim-chewing
(Later, I removed /etc/X11/Xsession.d/95xinput, and everything works well so far.)