Carry out the national salvation movement and civil rights movement by boycotting Japanese goods. 19 19 went to study in the United States, and 1924 received a master's degree in economics from Columbia University. After returning to China, he successively served as the chief statistician of the Statistics Department of the Ministry of Finance and the Ministry of Industry. Xuan was hired as a professor by Zou Luzhi, president of Guangdong University (predecessor of Sun Yat-sen University), and taught statistics, accounting, banking and other courses. The following year, he was promoted to the head of the business department. He also served as a teacher of statistics and popular psychology in Guangdong Teachers' Hall, Guangdong Judges' School and Farmers' Workshop.