Around 1927, Theodorescu-Sion was again concentrating on his murals: his only works at the Official Salon for that year were studies for a wall painting called "Șipotul" ("Gushing Spring"). Returning to Constanța in 1928, he helped organize an official art show to mark the semicentennial of Romanian rule over that region. His own paintings were selected to represent Romanian art at Expo 1929 in Barcelona, Spain, and was part of the 1930 international exhibits in The Hague and Amsterdam.