一、多重矛盾并存下的经济合作。在东北亚区域的各国之间，政治、军事战略目标相冲突与多边缓和并存；强国与弱国、穷国与富国并存；工业水平先进与工业水平落后并存；社会体制成熟与体制改革过渡并存；双边经济合作与经济实力、综合国力竞争并存；扩大出口贸易与限制高档工业 First, multiple contradictions co-exist under the economic cooperation. In countries in Northeast Asia, conflicts between political and military strategic objectives and multilateral easing exist side by side; power and weak states coexist with poor and rich countries; advanced industrial standards and industrial standards coexist; social systems mature and institutional reforms coexist; Bilateral economic cooperation and economic strength and coexistence of comprehensive national strength; expansion of export trade and restriction of high-end industries