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He Xingwu teaches students with sign language at a special school in Nanchang, east China's Jiangxi Province, Sept. 13, 2017.
The 74-year-old teacher He Xingwu has worked in the special school for 23 years. He lost hearing at the age of eight due to the improper use of drugs.
In 1994, He and his friend founded the school after his retirement. More than 300 hearing-and-speaking-impaired students have graduated from the school.