Combination photo taken on March 24, 2017 shows 6-year-old autistic child Xiao Cheng (pseudonym) and his mother walk on a road (upper) and Xiao Cheng's painting about his wish to frequently visit parks with his parents (lower) in Nanchang, capital of east China's Jiangxi Province. April 2 marks the World Autism Awareness Day. (Xinhua/Hu Chenhuan)
