The impact of building a 1.5-meter-high wall on the house terrace on Feng Shui

As long as it does not affect the lighting, there will be no impact. If you feel it will be affected, you can open a small skylight and install a small window on it.

The 1.5-meter wall blocks the view. This is designed like this for safety reasons. From a Feng Shui perspective, if the floor is high enough and does not affect lighting, it will not have any impact on your home.

Finally, it is recommended that you rely on science and do not believe too much.