The ongoing 2015 Beijing International Aging Industry Expo has attracted a mass of visitors.
Hundreds of enterprises across China have displayed their products and services for aging people.
Many advanced products have also found the spotlight.
For instance, an exhibitor has showed an app to let children help aging people, as seniors have difficulties in using smart phones.
"With the app, children can know where their parents are. At the same time, children can order food and taxi for their senior parents with the application."
Meanwhile, a door lock that can be unlocked both by keys and through the Internet highlighted the expo.
The expo started on Friday and will last to Sunday.