This is weird, the chinese characters seem to include the { character.
Fix:
Replace in functions.php
$text = str_replace('{', '{', $text);
with
global $site_template;
$text = preg_replace(
'='.preg_quote($site_template->start).'([A-Z0-9_]+)'.preg_quote($site_template->end).'=Usi',
'{\1}',
$text
);