The goal: Quansong's Focus
I couldn't find one of these for my Ritualist (20/20 doesn't affect spirit/binding rituals, so the +1 20%, hp+30 is really nice, and much better skin than the collector's) for around the price in the Canthan Green Items thread on PC forum, so I just used whatever worked, and this gets the job done pretty well. The run is pretty easy, so I won't go too in-depth.
The build: Warrior/Monk
Executioner's Strike - Dismember - Disrupting Chop - Dolyak Signet - Flurry - Vigorous Spirit - Distracting Blow - Healing Hands
Two interrupts are necessary, because the key to killing Quansong himself is stopping his spirits (his main damage comes from Spirit Burn, and his heal from Spirit Light, so this renders him useless), and since you have to kill the Temple Guardians leading up to him, V. Spirit/HH means you can stand in the AoE and take on 3-4+ at a time no problem

The attributes:
Healing Prayers: 10
Strength: 8 + 1
Axe Mastery : 12 + 1 + 3
The location:
Run out from Zin Ku Corridor, back into Tahnnakai Temple Explorable, and run backwards until you get to the room with Karei:
then walk up the stairs in the northwest corner:
and go through the tube there. Just make sure to clear out the Temple Guardians around Quansong before going at him, otherwise they can make things a little nasty, as Quansong requires a good bit of attention. This focus still sells for 20-35k in Kaineng Center, as not that many people farm it, but maybe it'll start going down if more people farm it. Enjoy and good luck