What are the hindrances that could be there whilst planning to connect any to two stations in a city during metro construction?

There are several potential hindrances that could arise when planning to connect any two stations in a city during metro construction. Here are some of them:

1. Geographical Constraints: The physical layout of the city can pose significant challenges. This includes natural features like rivers, hills, and bodies of water, as well as man-made structures like buildings, roads, and other infrastructure.

2. Legal and Regulatory Issues: There may be laws and regulations that restrict where and how construction can take place. This can include zoning laws, environmental regulations, and property rights issues.

3. Financial Constraints: Metro construction is a costly endeavor. Budget constraints can limit the scope of the project, and financial issues can cause delays or even halt construction altogether.

4. Technical Challenges: The engineering and technical aspects of metro construction are complex. Issues can arise with the design and implementation of the project, including problems with the construction materials, technology, and machinery used.

5. Social Impact: The construction of a metro can have a significant impact on the local community. This can include disruption to daily life, noise and air pollution, and potential displacement of residents and businesses.

6. Political Factors: Politics can play a big role in metro construction. Political opposition, changes in government, and public opinion can all influence the planning and execution of the project.

7. Environmental Impact: The construction process can have a significant impact on the local environment. This includes potential damage to local ecosystems, pollution, and changes to the landscape.

8. Safety Concerns: Safety is a major concern in metro construction. This includes the safety of the construction workers, as well as the safety of the public during the construction process and once the metro is operational.