1. Install drainage pipes: You can install drainage pipes around the house to introduce rainwater and sewage into a proper drainage system. This requires professional workers and tools to ensure the correct installation and connection of pipelines.
2. Build a drainage ditch: If you can't dig a drainage ditch, consider building a drainage ditch. This requires some knowledge and skills of civil engineering to ensure the correct design and construction of drainage ditch.
3. Use a drain board: A drain board is a board that can be placed on the ground to help drain water. This board can be placed around the house to guide rainwater and sewage to a suitable drainage system.
4. Install a rainwater collection system: If there is a lot of rain around the house, consider installing a rainwater collection system. This system can collect rainwater and then use it to water the garden or flush the toilet.
In a word, if drainage ditches are not allowed to be dug around the house, we need to take other measures to solve the drainage problem. This requires some professional knowledge and skills to ensure the correctness and feasibility of the solution.