During the following years, Baron de Stael traveled widely and studied with the best oriental scholars in Germany, England and India.
He started his academic career in 1909 when he was appointed assistant professor of Sanskrit in the University of St. Petersburg and the member of the Russian Committee for the Exploration of Central and Eastern Asia. In 1912, he visited the US and lived in Harvard for some time to study Sanskrit.
He was in China when the Bolshevik Revolution in Russia broke out. The government of the new Estonian Republic, established in 1918 after the Versailles treaty, left him only a small part of his inherited estate. He then accepted an Estonian citizenship but remained in Beijing. With the recommendation of his friend Charles Eliot, the then principal of the University of Hong Kong, he was invited by Hu Shi to teach Sanskrit, Tibetan and History of Indian Religion in the Beijing University, as lecturer from 1918 to 1921 and as professor from 1922 to 1929. He helped set up the Sino-Indian Institute in Beijing in 1927. In 1928 he was a visiting scholar in Harvard, helping the Harvard-Yenching Institute to collect books. In 1932, he was selected an Honorary Fellow of the Institute of History and Philology (歷史語言研究所),
