Buried fires crack a porcelain mystery

Controlling the flames

Across northern Fujian, archaeologists have found high-status tombs from the same period — large earthen burial mounds containing Zhulinkeng proto-porcelain alongside bronze ritual vessels — exclusive markers of elite status during the Western Zhou period.

"These were not ordinary burials. The people interred in them were likely tribal chiefs or nobles, who controlled proto-porcelain production," Yang says.

Maintaining a dedicated industrial zone and supporting a full-time ceramic workforce required substantial resources and social organization, something only elites could provide, he adds.

For decades, archaeologists had unearthed substantial quantities of early Western Zhou proto-porcelain at major northern sites, including Zhouyuan in Shaanxi and Liulihe in Beijing, but could not determine where it had been produced.

The Nanjing University team compared the chemical composition of Zhulinkeng's wares with samples from those northern sites. The match was unmistakable.

"It is like fingerprint analysis. We can now say with confidence that a significant proportion of the early-to-middle Western Zhou proto-porcelain found in northern China was produced at Zhulinkeng," Yang says.

The discovery shows that the kilns of northern Fujian were integrated into supply networks serving the Zhou political center.

In the early Western Zhou, bronze vessels occupied the pinnacle of ritual culture, but bronze was rare and accessible only to the highest nobility. Proto-porcelain — hard, glossy, and capable of being produced on a much larger scale — served as a crucial supplement. The vessels produced at Zhulinkeng closely mirrored the shapes and dimensions of their bronze counterparts used in the Zhou heartland, according to the project's archaeologists.

"Fujian's contribution to pre-Qin civilization has often been overlooked," Yang says. "This discovery shows that, more than 3,000 years ago, the people of northern Fujian built a bridge of cultural exchange between south and north."