HONG KONG -- Like many Chinese citizens, Xu Chang scrolls through e-commerce sites on his phone every day. He chats with his friends via WeChat, a ubiquitous instant messaging app. He navigates through Beijing's traffic jams using Gaode Maps. When a cold spell hits, he stays at home, enjoying meals delivered through a food delivery app.

The Big Story
From WeChat to Taobao, China's elderly are embracing big tech
Far from being daunted, many are sold on communication and e-commerce apps