title: How to translate hex to utf-8
body: <p>I want to translate a string in hex to utf-8, for example,<code>"\\XB6\\XAB..."</code> to <code>"中国"</code>. I use <code>"\x68\x65\x6c\x6c\x6f".unpack("Z*")</code> → <code>"hello"</code> but it doesn't work.</p>