Fengming City, outskirts, level 40 monster zone.
This was a low forest where level 40 little goblins would respawn. These green-skinned little fellows were short, with only a piece of rag tied around their waist and a wooden stick picked up from who-knows-where as their weapon. But they were extremely fast, dealt high damage, and every third attack was guaranteed to be a critical hit. Most importantly, they never appeared alone; encountering them meant facing at least five at a time, which was a headache for ordinary players. However, this area had very tasty little red berries that could be harvested. Not only would the NPC merchants in the city buy them, but players who had learned cooking and alchemy would also purchase these little red berries in large quantities, keeping prices high. As a result, many players around level 40 would form groups to come to this area, leveling up by grinding monsters while also gathering little red berries to increase their income.
