1. First you have to get to the part of the City named "Maatu"
2. visit this thread:
and have a look at the video in the posting number 6 from Ik92 (at this place: thanks Ik92 for the great guide!).
I am farming this place with my cantha-warrior/monk, too, but I use a faster build.
As a ritualist you should try this build:
1.soothing memories
2.mend body and soul
3.spirit light
4.spirit transfer
5.resilent weapon
6.vengefull was khanhei (E) <- dependend on your second class this is your main dmg-spell and this spell heals you while taking dmg, too
7.*** dmgspell
8.*** dmgspell
Within 3 to 5 minutes u get the xp for killing about a dozen kirin solo and you wil make good money, too.