how to post special character?

[eluser]Tống Kiện Phi[/eluser]
But in the config file, i set

$config['global_xss_filtering'] = FALSE;

Why CI auto clear it? i writed the web app to save good php or other source code to use in the future, so i need to insert data into database exactly, how to completed turn off it.

Sorry, my english is not good