 However, according to Ton That Thien's research, he was a member of the inner circle of the Comintern, a protégé of Dmitry Manuilsky and a member in good standing of the Comintern throughout the Great Purge.In 1938, Quốc (Ho) returned to China and served as an advisor to the Chinese Communist armed forces.He was also the senior Comintern agent in charge of Asian affairs.