Level 1 — Absolute Beginner
A long time ago, there was a big stone city in China. It is called Shimao. The city is about 4,000 years old.
Scientists studied the DNA, or the genes, of 144 old skeletons from Shimao. DNA can tell us who a person's family was.
The scientists found that powerful families called clans ruled the city. The clans followed the father's side of the family.
The scientists also found that people were sometimes killed as part of religious rituals. Almost all of these people were men.
- ancient
- very old, from a long time ago
- city
- a large place where many people live together
- scientist
- a person who studies the world to learn new facts
- DNA
- the material inside our bodies that carries family information
- skeleton
- the bones of a body
- clan
- a large group of families connected to one another
- powerful
- having a lot of control or strength
- ritual
- a special ceremony done in the same way every time
Level 2 — Elementary
Shimao is a huge, walled stone city in Shaanxi Province, northern China. It was built around 4,200 years ago and covers about four square kilometers, making it one of the largest settlements of its time in East Asia.
A team of scientists led by Fu Qiaomei at the Chinese Academy of Sciences studied ancient DNA taken from 144 skeletons found at Shimao's main city and its smaller surrounding settlements. This is the largest DNA study of Shimao ever done.
The results, published in the journal Nature, show that Shimao's society was organized around patrilineal clans, meaning family lines and power passed down through the father's side. Most people living there were descended from local farming communities, but their DNA also showed genetic links to people from far away, including southern China and steppe regions.
The study also confirmed something disturbing: mass burial pits linked to human sacrifice at Shimao contained mostly male victims, offering new clues about how power and violence worked in one of China's earliest cities.
- settlement
- a place where people have chosen to live and build a community
- patrilineal
- tracing family descent and inheritance through the father's line
- descended
- coming from ancestors who lived before
- genetic
- related to genes and inherited traits
- steppe
- a large area of flat, dry grassland, often in central Asia
- mass burial
- a grave containing the bodies of many people together
- victim
- a person who is harmed or killed by an event or action
- violence
- behavior intended to hurt, damage, or kill
Level 3 — Intermediate
Shimao, a massive stone-walled settlement in Shaanxi Province dating to roughly 4,200 to 3,700 years ago, has long puzzled archaeologists as one of the earliest and largest urban centers in East Asia. A new ancient-DNA study, led by geneticist Fu Qiaomei at the Institute of Vertebrate Paleontology and Paleoanthropology under the Chinese Academy of Sciences, now offers the clearest picture yet of who lived there and how their society was structured.
Analyzing genetic material from 144 individuals recovered from Shimao's core citadel and its surrounding satellite settlements, the researchers found that most inhabitants descended from Yellow River farming populations that had occupied the region roughly a millennium earlier. Yet the DNA also revealed unexpected genetic ties to populations from distant southern China and the Eurasian steppe, pointing to a surprisingly extensive network of prehistoric contact and mobility.
Perhaps the study's most striking finding concerns social organization: Shimao's population appears to have been structured around patrilineal clans, kin groups in which authority and lineage passed through male ancestors. This structure, the researchers argue, likely underpinned the concentration of political and religious power evident in the city's monumental architecture.
The genetic data also sheds troubling light on Shimao's well-documented mass burial pits, long associated with ritual human sacrifice. The new analysis confirms that victims in these pits were overwhelmingly male, a pattern that researchers say may reflect the targeting of captives or rivals from outside the ruling clan structure, rather than random selection from the general population.
- urban
- relating to a city or densely populated settlement
- citadel
- a fortress or stronghold at the center of a city
- satellite settlement
- a smaller community located near and connected to a larger center
- millennium
- a period of one thousand years
- mobility
- the ability or tendency of people to move between places
- lineage
- the line of descent from an ancestor
- monumental
- large, impressive, and built to last
- captive
- a person held prisoner, often taken during conflict
Level 4 — Advanced
For decades, Shimao's monumental stone ramparts and stepped platforms have marked it as one of prehistoric East Asia's most enigmatic urban experiments, a walled city whose scale rivaled contemporaneous civilizations elsewhere yet whose social fabric remained largely opaque to archaeologists working from material culture alone. A newly published ancient-DNA analysis, led by geneticist Fu Qiaomei of the Chinese Academy of Sciences, begins to close that gap by reconstructing the biological and social architecture underlying the site's imposing stonework.
Drawing on genomic data from 144 individuals sampled across Shimao's central citadel and its constellation of satellite settlements, the study situates most inhabitants as descendants of Yellow River agricultural populations who had occupied the region roughly a millennium prior. Yet the genetic record also registers unmistakable admixture with populations from southern China and the Eurasian steppe, evidence of a prehistoric contact network considerably more extensive than the site's remote inland location might suggest.
The study's most consequential contribution, however, concerns social organization. The data indicate a society anchored in patrilineal kinship, in which political and ritual authority descended through male lines, a structural finding that helps explain how a settlement of Shimao's scale could mobilize the labor required for its fortifications and elevated ceremonial precincts. Such clan-based consolidation of power, the authors argue, likely provided the institutional scaffolding for the city's most striking and unsettling feature.
That feature is the network of mass burial pits long associated with ritual human sacrifice at the site, whose demographic composition the new genetic evidence now clarifies with unusual precision. The overwhelming predominance of male victims, the researchers suggest, is more consistent with the targeted elimination of captives or rival factional figures than with an undifferentiated ritual culling of the general population, reframing Shimao's violence as an instrument of clan-based political consolidation rather than an indiscriminate religious practice.
- enigmatic
- mysterious and difficult to fully understand or explain
- opaque
- not clearly understood; difficult to see into or interpret
- genomic
- relating to the complete set of genetic material of an organism
- admixture
- a mixture, especially of genetic ancestries from different populations
- scaffolding
- a supporting structure or framework underlying a system
- precinct
- a distinct area within a larger site, often defined by function
- predominance
- the state of being greater in number or importance
- indiscriminate
- done without careful judgment or distinction between cases
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