Changde, a city in Hunan Province, China, features various residential areas with different architectural styles. Among these areas, the most prominent residential area with duplex buildings is the New District. The New District of Changde is known for its modern infrastructure and residential complexes that include duplex houses. These duplex buildings are designed to provide more space and privacy compared to traditional single-family homes.

The preference for duplex buildings in the New District can be attributed to several factors. Firstly, the city's rapid urbanization and economic growth have led to an increased demand for housing options that offer more space and amenities. Duplex buildings, with their two separate living units, are an ideal solution for families or individuals who require additional space or privacy. According to a report by the Changde Municipal Bureau of Housing and Urban-Rural Development, the New District has seen a 30% increase in the construction of duplex buildings over the past five years.

Secondly, the New District is well-connected to the city's transportation network, making it an attractive location for professionals and families. The presence of schools, hospitals, and shopping centers within the district further enhances its appeal. The proximity to these amenities makes duplex buildings in the New District a convenient choice for residents.

Moreover, the architectural design of the duplex buildings in the New District is modern and aesthetically pleasing. These buildings often feature large windows, spacious living areas, and well-maintained gardens. The combination of modern design and practicality has made duplex buildings a popular choice among residents.

In conclusion, the New District in Changde is the residential area with the most duplex buildings. This popularity can be attributed to the city's rapid urbanization, the demand for more space and privacy, and the convenient location of the New District. The modern design and amenities offered by these duplex buildings have further contributed to their popularity among residents.