Otherwise known as schools in the English servers, developer Snail Games recently introduced the clan leader weapons to the China server. Each clan will have one (more in the future I guess), and each weapon was used by a clan leader. I am guessing they are obtained via the new cross-server clan PvP.
With the arrival of the above 2 features, Snail Games also announced 2 of the 8 new clans will be added on 29th September. Roughly translated, they are the Ancient Tomb Sect and Blood Saber Sect. Each will have a special tie to an existing clan. The other new clans will be updated gradually.