 Because of his financial position, he was able to devote himself full-time to revolutionary activities.In a letter to his cousin on 30 January 1921, Zhou said that his goals in Europe were to survey the social conditions in foreign countries and their methods of resolving social issues, in order to apply such lessons in China after his return.In the same letter, Zhou told his cousin that, regarding his adoption of a specific ideology, "I still have to make up my mind."