Is there a way to accelerate resource yielding from an invader's lair or a Ghost's Shelter ?
I've observed that resource yielding is much slower from an invader's lair or a Ghost's Shelter, than from a resource tile.
Is this related with some knowledge which relates specifically with tiles / lairs / or in town production ? Or is there just a fixed ratio between tiles yielding and lairs yielding ?
Edit : and BTW, yielding rates are also slower in an enemy kingdom