With a high level of digitization and infrastructure development, east China's Shanghai has built strong and accessible public transportation systems and online platforms that are easy for everyone to use. QR codes are a good example. What is in a QR code? Many things: a link to the restaurant menu, the personal digital wallet, the ticket for transportation and so on.

Ben Coleman, a content creator and an English teacher from the UK, has been in the city for two years. He enjoys the convenience that QR codes bring, for example, scanning a QR code to enter the metro or order food.