President Xi Jinping's visit to South Korea might create a new pattern of the development of East Asia. ANBOUND research team believes that its key influence might be in the following aspects: First, it will stabilize the economic and trade as well as diplomatic relationships between China and South Korea outside the TPP framework. Second, it will contribute to restraining Japan’s influence in East Asia. Third, it will have delicate influence on relationship between the U.S. and South Korea. Fourth, it will further differentiate between North and South Korea and criticize North Korea at the same time.