An attendant wearing a viewer headset, matches the boxes as she demonstrates the augmented reality intelligent at an exhibition during the "Singles' Day" global online shopping festival in Shenzhen, southern China's Guangdong province Friday, Nov. 11, 2016. In a bright spot for China's cooling economy, online shoppers spent billions of dollars Friday on "Singles Day," a quirky holiday that has grown into the world's busiest day for e-commerce. (AP Photo/Kin Cheung)