Take a break and grab your favorite factions character & get the quest: Siege at Tsumei Village.
Load a skill bar that does AOE dmg, a self heal and prepare to dominate a lot of lvl 3s.
Since I only have a Rt and Sin eligible for this quest. I've tested a 100 blades sin, channeling rt and a VWK rt, as well as some ele and monk variants. The VWK rt has been the easiest to use, and is quite fast.
Zone into Sunqua, run forward and agro the first wave, so the townies don't pickup agro.
Kill the group on the right first, as the spawns on the right are very close (if you kill with Ancestors you'll pull the left groups together for easy pickup and spirit rift). Once the first wave is dead, the second group on the right should have spawned and picked up agro.
With VWK up you can pickup your items while you kill the second wave on the right. Once that second right group is dead, the last group on the right will spawn just up the hill, kill, pickup and resign.
Don't bother completing the quest as it takes to long. It's faster to just do the first wave, the ones on the right and resign, keeping the quest active.
*rezone trick*
With a good build you can get repeatable runs in the 40sec to 1min mark (including zoning) killing 25 foes. I'm fairly certain a primary ele should be getting faster times.
Of course, you won't be getting golds or rep points, but it's easy, and any prof can do it; fast.
Rt: [build=OAWjMMhsITLBWMdieTOOwlEPHAA]
*untested
Mo: Shield of Judgement.
Pa: 100 blades w speed boost.
Wa: 100 blades w shadow step.
El: Fire nuker
Me: Sig Illusions Fire nuker? echo vwk?
De: 100
Ra: Splinter Barrage
Ne: Aura of the Lich?
*post a template, I'll put it here.