NeighborhoodUnit is a concept of urban planning and design, which advocates the establishment of relatively independent residential blocks in the city, and each block has basic living facilities and services to meet the daily needs of residents. The core idea of block system is to divide the city into several small-scale and humanized blocks, so as to realize the integration of multiple functions such as living, working and leisure.

The main features of the block system include:

1. Humanization scale: the block system is usually small, which is conducive to the formation of close neighborhood relations and community atmosphere.

2. Mixed functions: The block contains various functions such as residence, commerce, education, medical care and leisure to meet the daily needs of residents.

3. Pedestrian friendliness: The block system encourages people to walk, reduces dependence on motor vehicles, and improves the livability and sustainability of the city.

4. Green environmental protection: The block system emphasizes the importance of green space, and advocates setting up public green spaces such as parks and squares in the block to improve the ecological environment quality of the city.

5. Community participation: The block system encourages residents to participate in the planning, construction and management of blocks, and improves the cohesion of communities and residents' sense of belonging.

The application of block system in urban planning and construction is helpful to improve the quality of urban life, alleviate traffic congestion, reduce energy consumption and protect the ecological environment. At the same time, the block system can also promote the economic and cultural development of the city and enhance its attractiveness and competitiveness.