The Gu Clan sent Xiao Xun to the Xiao Family so that she can get her hands on the Jade of the Ancient God Tuo She. In the past the clan leader of Gu Clan swore a blood oath with Xiao Xuan to not invade each others clans. In the present, it seems that only Xiao Xun possess the perfect pure Dou Di blood within the past 1000 years.
They are known as one of the strongest ancient clans alongside the Hun clan. Gu(古) means old or ancient in Chinese.
Most of Gu Clan is located in the Gu Realm which is located in the Center East Region of the Center Continent of the Dou Qi continent. More specifically, the portal that leads to Gu Realm is located there.
They have multiple Dou Zuns,Banshengs and Dou Shengs within their ranks. They have their own army and possess their own flying warships. Their 3 stronger fighters aside from their clan leader are called the 3 Immortals of the Gu Clan who are at least 6 star Dou Sheng or higher.