To access the quest zone, type @quest in the game.
To make your farming more smooth, utilize these commands in game:
βͺ @ii item name | To check item ID and description
βͺ @whodrops item name | To check who drops the item
βͺ @whereis monster name | To check where the monster that drops your needed item is located
βͺ If you can't find some item from monster drops, check @mall or monster arena in @quest