A Split in the Ashen Order  

This quest is given by either Shen Rai at 8.5, -68.6, -1300 Copy or Zhao Wu in the Ashen Order camp after you obtain ally with the Ashen Order or Ashen Disciples. It is the access quest for the Cave of Knowledge, which is found in the caves underneath the Ashen Order camp (swim in water to get to them).

Once inside you will need to clear some level 60 ^^^ mobs and reach Kufu in a tent there. Once your there investiage the scroll on the table next to him. After this return to Shen Rai for your choice of rewards.

The Cave of Knowledge is a repeatable instance with a 20 hour lockout timer.