magic-quote is another function that creates the problem.... 

Addslashes is a php function that adds a slash in front of ' (single quotes), " (double-quotes), and \ (back slashes) which makes Traditional Chinese words display improperly when parsing the string.

They thought the chinese word to be quoted or something like that...

A feature request for the mbstring extension.

Derick

As mbstring manual mentions, use EUC-TW or UTF-8 if you need to get it working. 

to properly escape chinese big5 character with "0xXX 0x5C", u may try this function. this tested with chinese character xu3 and gong1. if it doesnt work wif others, pls let me know. TQ

function addslashes2($string)
{
	$str=ereg_replace("([^\xA1-\xFE])[\x5c]","\\1\\\\",$string);
	$str=ereg_replace("'", "\\'", $str);
	$str=ereg_replace("\"", "\\\"", $str);
	return $str;
}

From my understanding the mbstring handles this, and if not the script added below by ks_meng should do the trick.  Marking this as closed, but if you feel this is insufficenet please reopen the bug.