Lu Xun believes that Mr. Fujino is great because he has no narrow national prejudice, is rigorous and responsible in his studies, and treats students from weak countries fairly. The author expresses his memory of Mr. Fujino, which is also one of the themes of the text. Of course, the author's evaluation of Mr. Fujino can't escape greatness, which makes the author think of Mr. Fujino when he has been fighting against reactionary forces for a long time and being persecuted by reactionary forces, which will increase his confidence.