以丰富的一手资料考察李汉俊在日本的经纬学堂、晓星中学、第八高等学校、东京帝国大学学习的情况。还探讨了他在日本留学期间倾向社会主义的背景和缘由;澄清了关于他师从河上肇,并在其影响下接受马克思主义的传闻。最后评估了李汉俊长期海外留学的利弊。 With a wealth of first-hand information Li Hanjun study in Japan Jingwei School, Hyosung High School, Eighth Higher School, Tokyo Imperial University to learn the situation. He also discussed the background and causes of his tendency to socialism during his studies in Japan and clarified the rumors that he had learned from the river and accepted Marxism under his influence. The final assessment of the advantages and disadvantages of Lee Han-ju long-term study abroad.