Great Wall of Jingdao
From MicrasWiki

The Great Wall of Jingdao is a massive project that should one day result in a wall on the Apollonian land border that is, approximately, quite long. There will be two gates in the wall for the rail connections to Senya. The project was started in 1687 during the reign of the Chidao Emperor. The official goal of the project was to create new jobs for the Krasnocorian refugees that had flocked towards Jingdao following the collapse of Krasnocoria.