Excavations led by the Chinese Academy of Social Sciences (CASS) have revealed a vast network of underground tunnels beneath ...

Today, entering the ancient stone city of Houchengzui in northern China means walking carefully through the sprawling ruins. Four thousand years ago, however, entering the city meant getting ...

China's first vertical large model for the tunnel and underground space sector, developed by the National Key Laboratory for Tunnel Boring Machines and Intelligent Operation and Maintenance under ...