Zhu Xiaoting's destination is Dawenkou Cemetery, the archaeological site of Liangwangcheng in Pizhou, which is the biggest harvest of Liangwangcheng archaeology in the past four years. By her side, there are more than 30 people cleaning up 10 graves or taking soil and moving soil.

After distinguishing eyebrow arch, mandible and pubic bone, Zhu Xiaoting, a college student in structural anthropology, preliminarily judged that it was an adult male skeleton. "The human bones of 5,000 years ago can be completely preserved, mainly because the soil in this area is alkaline. In the acidic soil south of the Yangtze River, few people could leave their teeth 2,500 years ago, "she explained.

Behind her, another colleague is cleaning up another skeleton. She carefully identified it and concluded that it was another adult male. Both skeletons were lying flat on their backs. Interestingly, they are face to face, which makes the skeleton without flesh and blood emotional. Zhou Runken, the archaeological captain who was squatting next to him, was a little puzzled: "Couples' tombs and mothers' tombs have been found before, but it is the first time for two people to bury a tomb together. What is their relationship? Father and son or brother? " Since the excavation in February, there will still be newly discovered ancient tombs here, with nearly 50 before and after. Archaeology has come to an end, and only a dozen tombs are still being cleaned up. At the busiest time, more than 30 archaeologists and 150 migrant workers gathered here, and the workload was equivalent to digging a swimming pool with a depth of 3.5 meters according to the area of a football field.

What is amazing is not only the sex, but also the height of these two ancestors exceeds 1.8 meters, which is higher than other ancestors in the tomb. Generally speaking, people who are well-off and well-nourished are taller, but there are not any funerary objects in this tomb, unlike most tombs, which contain more than 10 pieces of pottery. In the Dawenkou period, which has produced polarization between the rich and the poor, this often means that the owner of the tomb is poor. In addition, the other tomb owners are all heads east and feet west, only these two "experts" are heads south and feet north. In a word, this is a very special tomb.