Kerning City Construction Site is a map in Victoria Road, Victoria Island. Monsters here are level 2 to 14: Stump, Octopus, Blue Snail and 2 more. NPCs here include Chun Ji.
Minimap from the game files. Positions are from the game files, not tested in Classic World. Portal kinds come from type names in the game files; kinds marked "not tested" have not been checked in Classic World. An unmarked portal has no portal graphic, so the way in may be a door drawn in the scenery.
Grey numbers are portals on another map: each opens that map with the portal picked out. A coloured number followed by "here" is a portal on the map above. Positions are from the game files, not tested in Classic World.