When I was back from jogging late last night, I saw two deliverymen rushing into the elevator. One of them was holding a box of cake and answering his phone to express sorry to his customer. It turned out that he made the wrong direction so that the order was delayed. Another one asked me to verify if it was the right building he was to send his order. Later after my confirmation the two who wore thick work suits with helmets and gloves knew they entered the right building. As the rise of online commence and prevalence of mobile payment, online shopping is the optimal choice for almost everyone. Then deliverymen driving electric power cycles can be traced everywhere 24/7. They are playing the role of commodity distribution.