1. Energy loss: According to the concept of geomantic omen, the balcony is the dividing line between the external environment and the interior of the house. The mirror of the washbasin is facing the balcony, which may lead to the loss of indoor energy (or "gas") and affect the indoor energy balance.
2. Personal privacy: The mirror facing the balcony may affect the personal privacy of the occupants. People may worry that others will feel uncomfortable when they see their activities from the balcony.
3. Sunlight reflection: The mirror may reflect sunlight, causing light to reflect into the room. This may increase the brightness of the room and sometimes affect the visual comfort of the occupants.
4. Unbalance: The mirror facing the balcony may destroy the sense of space balance and give people a feeling of instability or chaos, especially when the mirror area is large.
It should be noted that these influences vary from person to person, and different cultures and beliefs have different understandings of Feng Shui. If you care about the influence of geomantic omen, you'd better consult a professional who knows geomantic omen so as to get more specific suggestions according to your situation. In addition, you should give priority to the comfort and actual needs of yourself and your family, and balance the feng shui factor with personal needs.