(1) Helen Keller was born on June 27, 1880, in a town called Tuscumbia in northern Alabama. Scarlet fever took her sight and hearing at the age of 19 months, and she soon lost her ability to speak.
Yet it was in this dark and lonely world that she learned to read and speak and began to communicate with others because of the efforts of her mentor, Anne Sullivan. And she graduated with honors from Radcliffe College in the U.S. and became a learned person, a famous writer and educator who mastered five languages: English, French, German, Latin and Greek.
She traveled throughout the United States and the world to raise funds for schools for the blind, dedicating her life to the welfare and education of the blind. She won the praise of people all over the world and was honored by many governments.
(2) Stephen William Hawking, who graduated from Oxford and Cambridge Universities and was awarded a Doctor of Philosophy degree from Cambridge University. He spent 47 years in a wheelchair because he had the misfortune of suffering from Lou Gehrig's disease, which causes muscles to atrophy, at the age of 21, and his speeches and question-and-answer sessions could only be accomplished through voice synthesizers.
In 1973, he considered quantum effects in the vicinity of black holes and discovered that black holes emit radiation like a black body, and that the temperature of their radiation is inversely proportional to the mass of the black hole, so that the black hole slowly grows smaller because of the radiation while the temperature gets higher and higher, and it ends in a last-minute explosion. The discovery of black hole radiation is of extremely fundamental importance, unifying gravity, quantum mechanics and statistical mechanics.
(3) Zhang Haidi (September 16, 1955-), born in Jinan, is a famous Chinese writer for the disabled with a master's degree in philosophy. She is currently a member of the Standing Committee of the National Committee of the Chinese People's Political Consultative Conference (CPPCC), chairman of the China Disabled Persons' Federation (CDPF), a member of the Chinese Writers' Association (CWA), and vice-chairman of the Shandong Provincial Writers' Association (SPWA).
In 1960, at the age of five, Zhang Haidi was paraplegic due to a spinal cord hemangioma. In 1970, she was devolved with her parents to Liaocheng Xinxian County in Shandong Province, where she completed her primary, secondary, and tertiary studies on her own, learned acupuncture, and practiced medicine in the area.
Married to Wang Zuoliang on July 23, 1982.In 1983 the Chinese ****production party decided to establish Zhang Haidi as a propaganda icon. Zhang Haidi was honored with two accolades: one as the "New Lei Feng of the 1980s" and the other as the "Contemporary Paul". Zhang Haidi has been a member of the 9th and 10th National Committee of the Chinese People's Political Consultative Conference (CPPCC), and in November 2008, she was elected as the chairman of the 5th Bureau of the China Disabled Persons' Federation (CDPF).