 In May-Sep 1923 he presented his first Mechano-Faktura compositions in the Novembergruppe section of the "Grosse Berliner Kunstaustellung".In November 1923 Berlewi returned to Warsaw, where with Władysław Strzemiński he founded the constructivist group Blok.In his review of the exhibition which accompanied the International Congress of Progressive Artists, published in "Nasz Kurier", he stated that Expressionism was obsolete and was replaced by Novembergruppe's Dada and by constructivism.