Board Thread:General Discussion/@comment-6192846-20150304021219/@comment-146.113.65.171-20150408160933

The whole reason for setting up a port on the continent would be to make it easier to go to and from the mainland, which is directly counter to the idea that they would rather be a closed system. Keeping foreigners out would be simpler just with a wall around the island itself, or a sufficiently strong navy patrolling the borders, than it would be for going to the trouble of building a wall on the mainland, which would open routes to the island that could be used by spies or foreign invaders. It would also be difficult to provide backup or wall repair should the foreign invaders bring in an army to bust in the gate.

Unless Jakoku was specifically trying to conquer the mainland and so set up the post as an offensive point. But again, the heavy Chinese implications suggest to me it's another country entirely, and it'll be explained later why there was nothing there.

Again--could be wrong about every point I've brought up and just blowing smoke at the moment, but I don't think it's "safe" to assume anything about that wall and the watchman.