Pollution caused by the sewage discharged from the kitchen toilet is:

If it is not a deep well discharge, it will generally not, and the unit building generally has a septic tank.

What are the sanitary environments of your own home polluted by kitchen water? It's not good, and whoever points to it is not good, and there is nothing else.

It is better to do it from the ground, or by separate pipes.

Leukorrhea! Or the semen left over from sex.

Hello, melena is common in upper gastrointestinal bleeding, I don't know if you have digestive road diseases, such as gastritis gastric ulcers, etc. If there is a regular melena that is worth noting, it may be chronic bleeding from the upper gastrointestinal tract. It is necessary to go to the hospital for examination and treatment.