“…east Asia based on shortterm macroeconomic indicators, given that regional economic integration has rapidly advanced since the 1990s. It is shown that the key for business cycle synchronization in East Asia is trade integration, including regional supply chains promoting intraindustry trade and product fragmentations (Shin andWang, 2003, Cortinhas, 2007;Rena, 2007;Allegret and Essaadi, 2011;Takeuchi, 2011;Rena, Cheng, and Chia, 2012;Gong and Kim, 2013;Li, 2017;Sng, Dou, and Rana, 2017;Jiang, Li, and Zhang, 2019). Some economists assert that the advancement of financial integration is also positively or negatively associated with business cycles through capital market liberalization (Rena, 2007;Pontines and Parulian, 2010;Gong and Kim, 2013;Kim and Kim, 2013;Xie, Cheng, and Chia, 2013).…”