Wikipedia
Gongjin-dan
http://travianr.com/ts4/register.php?ref=534 http://travianr.com/ts4/register.php?ref=214 http://travianr.com/ts4/register.php?ref=366 Gong Jing Dan, Gongjindan,Gongjin-dan (GJD) or 공진단 is a traditional multi-herbal medicine used for disorders of the central nervous system.
http://travianr.com/ts4/register.php?ref=781