You might have noticed in Dragonwings that there's a lot of moving around in Moon Shadow's life, which also means that his home space is constantly shifting and resettling. Could it be that this unstable home space speaks to Moon Shadow's struggle to belong in America? Maybe. What is it that constitutes a home? Is it four walls and a door? Is home necessarily a thing in space, or could it be a feeling?
Moon Shadow considers the Land of the Golden Mountain home because he has grown the most as a person in San Francisco.
Moon Shadow cannot consider the Land of the Golden Mountain home until his mother arrives because home is wherever his family members are.