A visitor (2nd R) experiences an intelligent manned aircraft at a technology exhibition area transformed from an old boiler factory in Hangzhou, capital of east China's Zhejiang Province, Sept. 11, 2019. The fourth Taobao Maker Festival, a big event Alibaba holds each year to showcase the latest creation of young Chinese designers, will be held from Sept. 12 to 25. More than 1000 commodities from some 400 Taobao shops will be exhibited in this event. (Xinhua/Huang Zongzhi)