A: Over the last 80 years, the museum can be understood to have had two main stages to its mission. For the first 40 years, while it was in mainland China, the museum's collection was moved about to protect its national treasures.
答：回首過往 80 年，故宮主要任務分為兩個階段：在大陸的前 40 年，為了「保護」國寶而大江南北四處遷徙。