How to deal with the property phase from the second floor to the fourth floor?

1. Consulting professionals: I suggest you consult professional architects or engineers, who can provide specific suggestions and solutions according to your building structure and needs, and make appropriate solutions.

2. Evaluation of building structure: The bearing capacity and layout of the building structure need to be evaluated when the water supply pipe leads to the fourth floor. Determine whether there is enough space to install new pipes and ensure that the floor can bear the extra load.

3. Determine the pipeline path: determine the best path of the water supply pipeline. This may require architectural design and planning to ensure the safe, efficient and convenient installation of pipelines. Existing walls or ceilings may need to be adjusted to accommodate new pipes.

4. Install a new water supply pipeline: Once the best path is determined, you can start installing a new water supply pipeline. This may include hiring professional plumbers or contractors who will lay and connect pipelines according to the plan.