While pursuing classical studies in accordance with his family’s wishes, Biasi became well known in his hometown for caricatures published in local humorous journals when he was still very young. His drawings kept up to date with the latest French and, above all, Mitteleuropean models, and they achieved considerable success beyond the national borders as well. He contributed to the most important Italian magazines of the period, including L’illustrazione italiana, Avanti della Domenica and Il Giornalino della Domenica, and he finally established himself as the illustrator of Grazia Deledda, with whom he shared a determination to assert the specific values of Sardinian culture in post-unification Italy. He also began painting, primarily folkloristic depictions of his homeland but informed by an awareness of the latest developments in European painting, with which he came into contact very early through shows of the Secessione Romana movement and the Venice Biennale, where he made his debut at the Esposizione Internazionale d’Arte della Città di Venezia in 1909. Participation in exhibitions in Rome and Milan was interrupted only for a short period while he served as a volunteer in World War I. From 1924 to 1926, he made a number of journeys to North Africa in search of ways to revitalise his means of expression. He developed an interest in decoration and experimentation with mosaic and fresco techniques in the 1940s.