Mahjong House is an interesting layout of Mahjong solitaire. An interesting fact is that the first Chinese symbol for home was a pictograph of a pig in a house. There is some speculation as to why the symbol for home in Chinese depicts a pig in a house and not a person. One explanation is related to animal husbandry. The first animals to be domesticated were pigs, and people then built a sty for the pigs and placed the living quarters for the people above it. Thus, when there was a house with a pig in it, it inevitably meant that people lived there.