Core Viewpoint - The article discusses the geographical and economic significance of border cities in China, particularly focusing on Dandong, Heihe, and Fangchenggang, and highlights the potential for trade and political changes in the region. Group 1: Geographical Insights - Dandong, Heihe, and Fangchenggang are the only three prefecture-level cities in China that directly border foreign countries [1][2] - Dandong is the largest among these cities, with a population of approximately 2 million and a GDP of about 100 billion [12] - The proximity of Dandong to North Korea and its potential for trade is emphasized, especially if geopolitical conditions change [14] Group 2: Economic Data - Dandong's total import and export trade volume is reported at 17.09 billion yuan, while Heihe's is 31.35 billion yuan, and Fangchenggang's is significantly higher at 128.21 billion yuan [13] - The article notes that Dandong's economic potential could increase dramatically with improved relations on the Korean Peninsula [14] Group 3: Political Context - The article mentions recent changes in North Korea's approach to tourism, with North Korean citizens visiting Dandong, which may signal a shift in political openness [26][30] - The new South Korean administration under Lee Jae-myung is focusing on peace and economic cooperation, which could impact border dynamics [32][34] - The deterioration of North Korea-South Korea relations and the strengthening of North Korea-Russia ties are highlighted as significant geopolitical developments [40][41]