$_ = "\\x{6b63}";

##</code><code>##

\x{6b63}

##</code><code>##

use Encode;

$_ = "\u6b63";
$_ =~ s/\\u(.{4})/chr($1)/eg;
$char = "\\x{$_}";
print "raw is $char \n";
print "decode is " . Encode::decode("unicode", $char). "\n";

__UNDESIRED OUTPUT__
raw is \x{6b63}
decode is \x{6b63}