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What does longing mean? Different people have their own answers for this question. On Tomb-Sweeping Day, a Chinese festival with a history going back more than 2,500 years, we are in Zhengzhou, China, a city where Chinese civilization started, to learn something about the Yellow Emperor, the ancestor of Chinese nation, and some great writers who originated from ancient Zhengzhou. Let"s ask the great writers in ancient China what they consider the meaning of longing!

何為思念？每個人心中答案各有不同。在已有兩千五百多年歷史的中國傳統節日——清明節，我們來到中國鄭州，在中華文明開始的地方，步入時空的隧道，探望華夏人文始祖軒轅黃帝，拜訪生長于此的古代大文豪，以思念之名，來一場跨越時空的對話！