Create a complete winter-themed training map with the following:

PLATFORMS & STRUCTURE:
- Main ground platform from x=-600 to x=600 at y=400
- Upper platform from x=-300 to x=300 at y=200
- Small floating platform from x=-100 to x=100 at y=0
- Left wall at x=-650 from y=0 to y=450
- Right wall at x=650 from y=0 to y=450
- A rope connecting the ground to the upper platform at x=-200
- A ladder connecting upper platform to the floating platform at x=100

TILES:
- Tile all platforms with snowySoil tileset (or similar snowy tileset)
- Add a tall tile structure on the left side

BACKGROUNDS:
- Add a snowy mountain background in the back layer with horizontal tiling
- Add falling snow particles in the front layer
- Add a night sky background with parallax effect rx=50 ry=30

OBJECTS:
- Add snow-covered trees on the ground platform
- Add ice crystals near the upper platform
- Add a wooden sign object near the spawn point

PORTALS:
- Spawn portal "sp" at (-500, 400)
- Town portal "toTown" at (500, 400) leading to map 100000000
- Hidden portal "secret" at (0, 0) on the floating platform

MOBS & NPCs:
- Search for "yeti" or snow-related mobs and add 5 of them spread across the ground platform with patrol ranges
- Search for weaker mobs and add 2 on the upper platform
- Add a storage NPC near the spawn point
- Add a shop NPC on the right side of the ground, facing left

MAP SETTINGS:
- Enable snow weather effect
- Set as a non-town map
- Set BGM to something winter/christmas themed (query available BGMs first)
- Set map size to 1400x600
- Set VR to left=-700 top=-100 right=700 bottom=500
- Set field limit: disable mystic door
- Set mob spawn rate to 1.5x
- Set return map to 100000000
- Set level limit minimum 30
- Set map description "A frozen training ground for adventurers"
- Set help text "Defeat the monsters to train! Watch out for the yetis!"
- Add a tooltip near the secret portal at (0, 0) with title "Hidden Area" and description "Only the observant will find this path"
