Visitors learn about a "lipstick printer", a new product popular at on-line commercial platforms, at the Consumer Goods Exhibition Area of the 4th China International Import Expo (CIIE) in east China's Shanghai, Nov. 6, 2021. Lots of exhibitors at the 4th CIIE resort to livestreaming promotion at their booths to attract on-line buyers for items displayed on-site. [Photo by Liu Ying/Xinhua]