It depends on the distance from the grave. If the distance is close, the closer it is, the more unlucky it is. It is unlucky to see graves around the house. A grave in front of the house is the fiercest feng shui, and a grave behind the house is almost the same.
There is a small river in front of the house, which is generally auspicious; If the water has an odor and is too turbid, it will be unlucky for the water to have a sound, and there are many other factors to consider.