文物不会说话，却是历史真实的见证，历经千年，温暖至今。在内蒙古土默特右旗的敕勒川博物馆内有这样一件瓦当，瓦当上有清晰可见浮雕字样“单于和亲”。这件瓦当诉说着怎样的故事呢？
记者：彭源
报道员：李书亭 乔文婷 董毅 辛旭 白旭 王彩娟 张瑾
新华社音视频部制作
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