Grinding Spot For Nukers

In Nanchang there's a place called Cane Castle to the south. If you run up the steps to the first level area, the mobs won't be able to reach you. All you have to do is kite them, have them chase you all the way up those steps until you reach the safe area, and then you can nuke away at your leisure. Co-ords at 515 471

These mobs are the Coin Mansion Warriors and Gladiators, which are level 82.
Keep in mind that at lower levels, you're not going to hit these mobs a lot, but still even with a miss, you'll be leveling up your nukes. And you'll get some pretty nice drops too. I've gotten level 4 elixirs and SM weapons from these guys.