Wall corner guards are necessary due to Feng Shui. Do they need to be installed?

The protection of the external corners of the wall can be divided into two methods: exposed corner protection and concealed corner protection, both of which can protect the wall corners. There are several types of surface-mounted corner guards: acrylic, plexiglass, PVC, and wooden corner guards. They are installed on the sunny corners of the wall like door covers. To make concealed corner protection, when plastering the wall and applying putty, the 10 cm range of the external corner of the wall should be strengthened with high-grade mortar and high-strength putty, and finally painted. This doesn't have much to do with Feng Shui.