How big a house does a family of four live in Feng Shui?

There is no clear regulation on the relationship between population and house in Feng Shui, but it is said that it is unlucky to have few people in the house, and it is lucky to have many adults in the house. The specific size is not clear, but according to modern standards, 20-30 square meters per person is enough.

I think of another example about the auspicious size of the house:

Ancient imperial palaces were all designed by Buddhist teachers, but anyone who has visited the Forbidden City knows that the emperor's bedroom is very small. The reason is that the room is small and the energy is more concentrated. If the house is too big, it needs to consume more owners' gas field to integrate with the house.