First, you can find the Stray Dog Post Office in Shenzhen on the Internet, which is an organization that helps stray dogs. Moreover, some dogs that people can't keep will be sent there, and there will be good dogs there. You can contact them to see.
Secondly, you can go online to Dog People Network, or Shenzhen Dog Network, or the pet area of Shenzhen Housing Network. Some people will plan to adopt their dogs for various reasons. You can go there and see if there are any dogs you like.