Paper sons or paper daughters is a term used to refer to Chinese people who were born in China and illegally immigrated to the United States by purchasing fraudulent documentation which stated that they were blood relatives to Chinese Americans who had already received U.S. citizenship. Typically it would be relation by being a son or a daughter. Many fled China because of constant war and poverty that occurred in China due to the corrupt Qing Dynasty. Several historical events such as the Chinese Exclusion Act and San Francisco earthquake of 1906 caused the illegal documents to be produced.