他无法选择它，而且从视觉上看，我的单位无法访问它，并且外交赞助界面也无法打开。结果发现他在山上有一个单独的模特，事情变得很有趣

I also saw this in one of my games. No way to get to that tile with a unit.

He can't select it, and visually, my unit can't access it, and the diplomatic sponsorship interface doesn't open. It turns out that he has a single model on the mountain, and things get interesting