 After Outer Mongolia had been occupied by Chinese troops in 1919, Tseveen became a professor at the Irkutsk University.He published articles on Mongolian law, but also travelled around Verkhneudinsk, Kyakhta and Maimaichen, where he met with discontented Outer Mongolians.At the founding congress of the Mongolian People's Revolutionary Party in 1921, Tseveen got the task of writing the Ten Aspirations, the party's platform.