If you spot what appears to be a particularly intense volleyball match in your local Chinatown, you might do a quick head count. It may be a game of nine-man, a sport with roots in China and old, exclusionary US immigration laws.If you spot what appears to be a particularly intense volleyball match in your local Chinatown, you might do a quick head count. It may be a game of nine-man, a sport with roots in China and old, exclusionary US immigration laws.