Construction of second historical archives of China completed in Nanjing

The construction of the main building of the second historical archives of China is completed in Nanjing, east China's Jiangsu Province, March 2, 2023. (Photo: China News Service/Yang Bo)

The design concept of the new building features traditional Chinese Luban Lock, a design with concave and convex wooden sticks interlocked perfectly, forming a solid geometric shape.