How many movies have Hans Mierendorff and Werner Brandes collaborated on?

They have worked on 7 movies together! Their first movie together was The Mistress of the World, Part I: The Girlfriend of the Yellow Man (1919) while their highest rated movie together was The Mistress of the World, Part VIII: The Revenge of Maud Fergusson (1920). They have not worked together since Der Demütige und die Tänzerin (1925). They are most known for their drama films together.