If a person suddenly appears out of nowhere, how can you register them for household registration and obtain an ID card? Here’s a 100% effective method: Make yourself known as a well-known homeless person within a radius of N kilometers. When asked about your family background, claim ignorance, and insist you’ve always slept on the streets, accepting only food—not money. It may take time, but in reality, there are numerous cases of homeless individuals who cannot account for their origins and have successfully been registered under collective household registration—though they are only eligible for collective registration, not individual.