When Manila was surrounded by the Japanese during World War II, the refugees fled to **Bataan**. This movement of refugees is historically known as the "Bataan Death March," where thousands of Filipino and American prisoners of war were forced to march long distances under harsh conditions by the Japanese military. Pearl Harbor, on the other hand, was not the destination for the refugees; it was a major naval base in Hawaii that was attacked by the Japanese on December 7, 1941, leading to the United States' entry into World War II. China and the United States are not directly related to the event of refugees fleeing Manila during this time period.