The article discusses the implications of the THAAD (Terminal High Altitude Area Defense) plan, a US missile defense system deployed in South Korea to protect against North Korean aggression. The plan has been met with strong opposition from China, which has responded by imposing an economic boycott on South Korean businesses. This has resulted in significant economic losses for South Korean conglomerates such as Lotte Mart, which has invested heavily in the Chinese market. The article highlights the political and economic tensions between China and South Korea, and how they impact businesses operating in these countries.