🛠️ Invention or technique

Tulou: communal rammed-earth fortress dwelling

Tulou: fortaleza residencial colectiva de tierra apisonada

Date
c. 1450 · confidence low
Place
Yongding, Longyan, Fujian, China
Credited to
Hakka and Fujian communities
Field
Tools

⚠️ Disputed: the sources disagree.

What it is

A round or square building of up to four or five storeys, with rammed-earth walls over a metre thick reinforced with bamboo and timber strips and housing dozens of families around a courtyard. It combines defence, thermal insulation and seismic resistance.

Origin is disputed: some trace it to the Song dynasty (12th-13th centuries) and most surviving examples date from the 17th-20th centuries (Chengqi Lou, 1709). The c. 1450 date marks its spread in the Ming.

What it led to

  • defensive communal housing in the mountains of southern China
  • rammed-earth walls with plant reinforcement
  • UNESCO heritage for communal architecture
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