My family lives in a townhouse, and my neighbor put a big landscape stone in his yard with his back to my house. Is this detrimental to my feng shui?

Landscape stone has many functions. If it is used for evil, it will have some influence. However, different shapes and heights have different effects. Furthermore, relative to the orientation of your main door, if it is in the east and west of your main door, the inventor has no influence, but if it is in the southwest, the influence is even greater. If there is a specific map, you can make further judgment.