The article discusses economic integration in East Asia from the perspectives of spatial and neoclassical economics. The researchers explore regional integration, specialization, agglomeration forces, industrial clustering, and location choices of multinational enterprises in the region. They also analyze the evolution of institutions and policies for economic integration in East Asia. Key findings include the structure and determinants of intra-regional trade, the impact of economic opening on industrial agglomeration in China, and the home market effect in ASEAN countries.