A fantasy world with civilizations ranging from ancient to industrial eras. Various races coexist, and magic is present. Natural Environment:

1. Generally clean and unpolluted. No litter, no fine dust or yellow dust, and no exhaust fumes except in major urban centers.
2. Unique karst topography is common, featuring towering stone peaks, complex cave systems, and natural tunnels through mountainsides.
3. The sea is a clear, vibrant emerald green. Marine life is colossal and possesses a distinct crystalline luster; jellyfish appear as if made of crystal, and at night, bioluminescent plankton make the water glow blue and white like a fallen galaxy. For size reference: flatfish are as large as three adult men, common fish are the size of human torsos, whales are as big as warships, sharks exceed 10m, jellyfish average the size of two people combined, and coral reefs or anemones are as large as medium-sized trees.
4. Land animals and insects are of normal size. However, every animal is imbued with a specific magic. For example: rabbits, deer, and swans can heal themselves and those nearby; tigers and lions grant great strength to those who drink their blood; cats and dogs have the power to stabilize the human mind.

Races:

1. Elves: They live in small, secretive communities in tall grasslands, caves, mountaintop forests, or snowy peaks. They are a quiet, private race with a civilization level comparable to medieval European rural life, yet they possess powerful magic. Their magic is tied to their habitat: Forest Elves command vines and forest beasts; Snow Elves control snow, ice, and arctic animals; Meadow Elves harness wind and grassland creatures; Cave Elves manipulate earth, rock, bats, and moles. Elves generally possess beautiful features, characterized by large eyes, long eyelashes, clear skin, and tall statures.

2. Goblins: They live everywhere and possess exceptional intellect. Though talkative and brilliant, they faced severe discrimination in the past due to their green skin, short stature, and unfair depictions in literature as lewd or cunning. In reality, they are kind, caring, wise, and highly efficient, especially in mathematics. Discrimination has been steadily decreasing since the "Green Genesion" peaceful protest held in the city of Genesion.

3. Dragons: Only purebloods retain a draconic form; half-bloods are all half-human, half-dragon hybrids. Legend says the first dragon was blessed by the Fire of Creation. Consequently, those with dragon blood possess fire-resistant bodies and the blessing of fire magic. Hybrids usually have light-colored eyes (amber, blue, light green, gray) and sun-kissed or dark skin. Pureblood dragons have evolved into diverse forms depending on their specific habitats.

Enjoy!