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The Korean economy has been significantly affected by the emergence of China. It is now the largest market for Korean exports and a major supplier of its low-cost imports but has at the same time become a serious challenger to Korea in the world markets for manufacturing exports. This paper investigates changes in China's export structure and its effect on Korea, and bilateral trade between the two. It also examines the motives for Korean investment in China and its effect on bilateral trade and cross-border production networks. [ABSTRACT FROM AUTHOR]

This paper empirically examines whether three East Asian stock markets, namely, those of China, Japan and South Korea, are individually and/or jointly efficient, and whether contagion exists between the cointegrated markets. While individual market efficiency is examined through testing for the random walk hypothesis, joint market efficiency is examined through testing for cointegration and contagion. The present study finds that the hypothesis of individual market efficiency is strongly rejected for the Chinese stock market, but not for the Japanese and the South Korean stock markets. However, when testing for cointegration, market efficiency is strongly rejected for all these markets. We take a simple case of contagion and find that although there is a long-term relationship among the three markets, the contagion hypothesis cannot be rejected only between Japanese and South Korean stock markets, indicating short-run portfolio diversification benefits from these two markets. [ABSTRACT FROM AUTHOR]