In the past two years, no one used WeChat to contact and sent few friends. However, since the development of red envelopes, WeChat broke out on a large scale, and now work cannot be separated from WeChat.

Wechat provides merchants with a new marketing channel and a way to gather customers online. This kind of business includes catering, take-away, group buying, etc. Service O2O: WeChat public platform can better serve customers, such as hospital appointment registration, illness follow-up, hotel one-stop service from reservation to check-out. It is more common in developed areas like Shanghai.

Secondly, the emergence of WeChat payment facilitates the frequent small capital flow between acquaintances, which is one of the reasons why Shanghainese use WeChat more.