I think this has become something of an issue. Fortifying a position and defending it is fine, but fortifying inside an indestructible village hut or right on the map border to make flanking impossible is abusing the game mechanics. The game ends up taking twice as long as the lone engineer nutcase simply sits behind his minecraft-esque construction.
This is supposed to be China WW2 Battlefield, not China WW2 Legoland.
Any ideas on how to deal with this? Maybe banning some repeat offenders is necessary?
Again, I don't object to the use of engineers, but if you visit the servers you will see that the situation has gotten out of hand. Only games on empty steppes or plains are playable anymore.