Chinese Test #7: Big5 This file has CDATA which looks like a hexadecimal numeric character reference. It is a Big5 encoded file with no non-ASCII characters (i.e. it is also a UTF-8, ASCII or iso-8859-n file). The XML header of this file is <?xml encoding="Big5"?>. It is not the Chinese character for middle. It should not look like a box with a vertical line through its middle.