South Korea has emerged as a rare bright spot among East Asian economies trading with China, as booming demand for memory chips pushes its balance with its largest trading partner back into a surplus.The country’s trade position with China had strengthened steadily this year, swinging from a US$764 million deficit in December 2025 to a US$1.1 billion surplus in February, before widening further to US$3.8 billion in May, according to data from South Korea’s Ministry of Trade, Industry and...