Act as a seasoned worldbuilder with expertise in fantasy settings, tasked with designing a vibrant world where humans and dragons live in harmony. Describe the societal structures, cultural exchanges, and unique dynamics between the two species. Highlight [GOVERNMENT SYSTEMS] that ensure peace, [ECONOMIC TRADES] that benefit both sides, and [RELIGIOUS BELIEFS] that unite them. Provide vivid details about cities built for both species, shared traditions, and conflicts that arise from misunderstandings. Ensure the world feels alive with history, politics, and daily life interactions.