Did China attack other countries or did other countries attack china?

Throughout history, China has both experienced attacks from other countries and engaged in military actions against others. Notable instances of foreign aggression include the Opium Wars in the 19th century and invasions by Japan during World War II. Conversely, China has also conducted military operations, such as the Korean War and territorial disputes in the South China Sea. Thus, the relationship is characterized by both external aggression toward China and China's own military initiatives.