I installed the Chinese pack, and the Chinese interface works perfect
but in those reply & topic the Chinese characters become "?"

It's 1.1.4 ，and I add
$Configuration['DATABASE_CHARACTER_ENCODING'] = 'utf-8';
to conf/settings.php

OK
my problem has solved,mysql encoding
Thanks a lot

billtwy

1)check your settings.php if it has the $Configuration['DATABASE_CHARACTER_ENCODING'] = 'utf-8'; line, if not added it
2)check your phpmyadmin for what connection it uses on default - should be utf8_general_ci
3)check your database tables, they should be collated as utf8 , if not you need to follow these steps to re encode your database -Vanilla UTF8 wiki

I had similar problem and this is how I fixed mine - Japanese comes up as ?????? # 3

Cheers