Thanks @Shynur for the insight. I have copied to the path environment environment vaiable, yet it give this error:

LOFTDOT@Zuang-Ji MINGW64 ~

$ which emacs C:/Users/LOFTDOT/emacs/bin which: no emacs in (/c/Users/LOFTDOT/bin:/mingw64/bin:/usr/local/bin:/usr/bin:/bin:/mingw64/bin:/usr/bin:/c/Users/LOFTDOT/bin:/c/Python311/Scripts

Runing emacs on git bash generate this:

LOFTDOT@Zuang-Ji MINGW64 ~ $ emacs bash: emacs: command not found

Thanks @Shynur for the insight. I have copied to the path environment environment variable, yet it give this error:

    LOFTDOT@Zuang-Ji MINGW64 ~
$ which emacs C:/Users/LOFTDOT/emacs/bin
which: no emacs in (/c/Users/LOFTDOT/bin:/mingw64/bin:/usr/local/bin:/usr/bin:/bin:/mingw64/bin:/usr/bin:/c/Users/LOFTDOT/bin:/c/Python311/Scripts

Running Emacs on git bash generates this:

LOFTDOT@Zuang-Ji MINGW64 ~
$ emacs
bash: emacs: command not found