Tell you about a resourceful place--- Andes Forest Haven. If you are looking for a place to train, then this is the best choice. There are kinds of BOSSes ranging from Level 3 to Level 65 in the Andes Forest, suitable for all levels of players to train or to even obtain a quick leveling-up. 
 
          Players can go to find the Andes Forest Haven by on their own or by directly using the Pass to Andes Forest Haven. It is a massive land filled with all kinds of critters, including: the Lv 27 Rookie Boxeroo, the Lv19 Kiver shroom, the Lv17 Angelic Panda, the Lv 30 Mad Boar and many more. Defeat them and you will obtain tons of EXP.  Also you can obtain a considerable amount of drops which are very useful for reproduction.
 
Players who fancy the forest treasures can use the treasure map to explore. The lucky ones may discover some truly awesome gems, i.e. Unique Gem, Refining Sand, Level 75 gear of any class, a Pass to Lone Tower, or tons of gold.