This group of Jade Brotherhood (tied to the Missing Daughter quest) has the potential to drop max req8 swords, shields and foci. And with the higher gold droprates in hardmode, this is probably one of the best spots to farm req8 items. Not to mention the skins that drop here are some of the best Cantha has to offer Diamond, Iridescent, Bladed Shield, Dusk Blade, Shinobi Blade, Katana, Broadsword, Paper fan, Paper Lantern, Jug etc.. can all drop here in max req8.
I've not had too much luck farming here my self except for a few gold q8 foci drops. But thought it was worth sharing.
Unfortunately botters have recently discovered this spot aswell.