Aion Guide for Level from 37 to 40
We have notice that there is a Lepharist Citadel area in eltnen. But you can solo 38 elites here in the observatory entrance at level (aion gold) 36-40 easily. You use the small ledge on the right side of the pic to run to the other side while the mob has to run all the way around the ramp. We get 280k a kill at 41 so it should be a good chunk at 37. Do not fight from the ledge the mob will reset.
KHQ is a good option. If you sneak in past the windmill area over the bridge nearby in Aion, you'll find yourself in a spot with a pathing solo tracker and some of those big beast things through 2 stationary warmongers. Kill those warmongers then kite the lower hp scout types such as raiders around all the open space you'll have. Leave the panthers alone and just kite around them so they don't spawn on you and immediately agro.
You can stock up on molars this way for your speed boots if you don't have them yet. Another option is LC in SE eltnen. Kite the elites in the small open area between where the elites start and the back area where they are too thick to kite around. Stick to assassins if you can, they go down much faster. Elites here will drop insignias for some nice blue crit jewelery from some nearby quests.
By the way KHQ and LC are the best ways to level (aion kinah) to 40. They got us to 40 fast. In LC, we had a SM partner and we got very nice experience. Also, we had a goldstone drop in LC and other nice drops.