User blog comment:AirTrinityAirways/Language/@comment-5956954-20191024030545

I believe that is achieved with the Flags script from the Dev Wiki. What the script does is it visualises flags that represent different versions of the same wiki in different languages. In other words, the Chinese wiki has to exist for the Chinese flag to work.

Try using the script and see how it goes. Troubleshooting can be directed onto the Dev Wiki Discord.

All the best!