Khang Phi is a large library in Hsien, located on the cliffs above what is Charandapresh in the home world. It has existed for centuries and is a repository for knowledge and wisdom from all of that time. Children are often donated to the monks and raised to be part of the order. Those who join the order rarely leave Khang Phi again.
The File of Nine meets at Khang Phi and issues their edicts from there, with the monks encouragement, who hope that the File members will absorb some wisdom while they are there.
The knowledge to repair the shadow gates resides in Khang Phi and is stolen by Tobo with the help of Master Santaraksita.
It is mentioned in the Annals that the monks of Khang Phi collaborated with the Shadowmasters when Hsien was under their rule. The monks do not defy those who seek to be their overlords, but rather slowly try to wear them down with wisdom and reason.
Soil has been painstakingly hauled up a long staircase to Khang Phi for generations to create tiered farms from which the monks subsist.