In Chinese mythology, dilong → "earth dragon" is one of many types of -long (dragons) such as shenlong → "divine dragon" and huanglong → "yellow dragon". Since di → "earth; land; soil; ground" semantically contrasts with tian → "heaven; sky" (e.g., tiandi → "heaven and earth; universe"), the dilong is paired with the tianlong → "heavenly dragon".

Chinese dragons were supposedly able to fly, and thus were considered celestial creatures rather than terrestrial ones like the "earthbound" dilong. Two other exceptions are panlong 蟠龍 "coiled/curled dragon; a dragon that has not ascended to heaven" and tulong 土龍 "soil/earth dragon", which refers to the tuo → "Chinese Alligator"

Basically Dilong is a heavenly earth dragon from china.