The work is a collection of a series of letters written by Su Manshu to his close friend Liu San, spanning from the Bingwu Year (1906) to the Renzi Year (1912). The letter mainly shows Su Manshu's various situations in revolution, studies and life. He mentioned the common revolutionary experience with Liu San in Japan, his participation in the Nanshe Society after returning to China, as well as the embarrassment in life and Liu San's generous help. The letter also records that Su Manshu traveled to Wuhu, Shanghai, Nanjing, Japan and other places to study Sanskrit, as well as his sincere emotions of being sick and financially strapped but caring about his old friends and singing poems, showing a fragment of his wandering life while pursuing his ideals.
