Study on the cooperation between northeast China and east China under the new development pattern 并列题名:Study on the cooperation between northeast China and east China under the new development pattern Study on the high quality development of China's tourism industry under the new development pattern 并列题名:Study on the high quality development of China's tourism industry under the new development pattern Research on the high-quality development of China's urban agglomeration under the new development pattern High-quality development of China's industrial chain under the new development pattern Optimization of financial structure under the new development pattern Research and practice of capital finance under the new development pattern 并列题名:High-quality development of China's industrial chain under the new development pattern Research on the dynamic evolution and driving factors of China's agricultural product trade under the new development pattern