About 70 years ago, thousands of people lost their lives here. Today, like many other tourist attractions, men and women in shorts and shorts come here, wearing sunglasses, carrying cameras or selfie sticks, in order to leave a few commemorative photos. At the same time, tour guides in different languages recounted the history to them-the film "Austerlitz" photographed visitors to Dachau and Saxony concentration camps with contrasting black-and-white images and fixed lenses, however, how should people deal with the ruins that carry such events? Can concentration camps become the object of mass tourism? (Xiao Yifu subtitle group)