Love City is a social software for making friends in the same city. As of February 5, 2022, 65438, the software did not launch the invitation code activity, so it did not exist.

The invitation code means that when someone registers with the connection he promotes, there is a default invitation code. In short, you must be recommended by someone who has registered. Connections can be characters. The invitation code is equivalent to entering the registration code when you use a software. It's the same as an invitation in real life. Only when you receive the invitation code can you register your account. When the forum is open to invite registration, the invitation code becomes a necessary condition for registering the forum.