Eye-driven wheelchair developed for ALS patients by university(2)

Zhang Wei operates the wheelchair at a residential community in Xi'an, Shaanxi province, April 17, 2019. Zhang has climbed two of China's Five Great Mountains on his hands. (Photo by Chen Feibo/For chinadaily.com.cn)

Zhang Wei operates the wheelchair at a residential community in Xi'an, Shaanxi province, April 17, 2019. (Photo by Chen Feibo/For chinadaily.com.cn)

Zhang Wei operates the wheelchair at a residential community in Xi'an, Shaanxi province, April 17, 2019. (Photo by Chen Feibo/For chinadaily.com.cn)

Zhang Wei operates the wheelchair at a residential community in Xi'an, Shaanxi province, April 17, 2019. (Photo by Chen Feibo/For chinadaily.com.cn)