Ha Noi is gradually transforming through modern and synchronised planning projects. Yet a liveable and sustainably developed city must not only build new infrastructure, but also provide a firm foundation for its cultural and historical values. In this new phase of development, preserving the structure of ancient villages is a paramount step in safeguarding the long-standing identity of the capital.

In the history of Viet Nam's village culture, the ket cha (ritual bond between villages) tradition is a distinctive custom under which villages establish bonds of fraternity, regarding one another as members of the same family and supporting each other in production, daily life, and community activities.