The term "reverse enclave" usually refers to a special type of enclave in geography, which is characterized by that a certain area or city is not located in the center of its administrative area, but is biased to one side or the outside. This situation often makes the region or city need to rely on roads, hydropower and other infrastructure in other regions to meet their basic needs.

Take Qiannan Buyi and Miao Autonomous Prefecture in China as an example. The state is located in the south-central part of Guizhou Province, but its enclave-Sandu County-is located in the southeast of Guizhou Province, bordering Guangxi Zhuang Autonomous Region.

Such a geographical location makes Sandu County a "reverse enclave" in Qiannan Buyi and Miao Autonomous Prefecture. Because Sandu County is far away from the autonomous prefecture, it is difficult to effectively guarantee many infrastructure and public services, such as road traffic, education and medical care.

There are many reasons for this reverse enclave phenomenon. In the history of China, due to the influence of war, migration, natural disasters and other factors, the population distribution and administrative divisions of some areas have changed, resulting in some areas being classified as administrative areas that are inconsistent with their actual geographical location.

In addition, when formulating urban planning and development strategies, some local governments often only consider their own interests and development needs, ignoring the actual situation and needs of enclaves, which easily leads to uneven development of infrastructure and public services.

The existence of reverse enclave phenomenon will not only bring a lot of inconvenience to local residents, but also affect local economic development and social stability.

Therefore, some local governments have begun to take measures to improve this phenomenon. For example, by strengthening infrastructure construction, optimizing the allocation of public service resources and promoting regional coordinated development, the gap between regions can be narrowed and the comprehensive development level of reverse enclave areas can be improved.

In addition, some local governments also optimize the allocation of administrative resources by adjusting administrative divisions and promoting urban planning reform, so that the reverse enclave area can better integrate into the development of surrounding areas.