Run CI under Wordpress root directory

@Rufnex, your second method partially work. like if i type http://www.wp-project.com/ciproject, it will bring me to page "index of /ciproject" with list links "parent directory" and "public_html". clicking "public_html" will bring me to the CI default controller "http://www.wp-project.com/ciproject/public_html/admin/users/login" (the "public_html/" part in the URL should be omited). once logged, i'm being brought to the dashboard page ("/ciproject/public_html/admin/dashboard").

the remaining issues now i think:
- is how do i redirect user to default controller ("http://www.wp-project.com/ciproject/public_html/admin/users/login" without "public_html/" part) once type http://www.wp-project.com/ciproject

- how to remove "public_html/" part in the url

Hope you'll still be with me in this issue and thanks much for the response...