The Pingliangtai site, located in Huaiyang, Henan Province, is China's earliest known ancient city, characterized by a carefully planned rectangular layout and a distinctive central axis. Dating back to the Longshan Culture, its ruins offer valuable insights into the lifestyles and urban planning ideas of early Chinese civilizations.

A key feature of the site is its advanced drainage system, built with interlocking ceramic pipe sections. As China's earliest recorded urban water management infrastructure, this system demonstrates the era's sophisticated engineering skills and forward-thinking municipal planning. Now, step inside Pingliangtai National Archaeological Site Museum with CGTN to learn more.