hi all, thank you for your reply.
I think i am facing a deep trouble now.
@marikamitsos the plugin couldnt work. /wp-login.php redirect to the homepage, that a good thing. But /login also redirect to the home page
After trying, my website to login the url seem to be mess up...
hmm, does anyone know how to hide wp-login.php by hardcoding the function.php?