In tennis and table tennis, it is legal to hit the ball around the net and net posts, i.e. the ball need not pass over the net as long as it gets to the legal court area on the opponent's side (without passing under or through the net).
Is this also the case in badminton? Or does it constitute a fault for the shuttle to be struck below the net's height even if it makes it to the other side without having to pass through/below the physical net? (In other words, for badminton ruling purposes is it imagined that the net is a flat vertical plane that extends infinitely past the sides of the court?)