Li Yongku is an author for whom publicly available information is currently limited; the library holds only one work by this name, Yong Si Yong Xing (Ever Pondering, Bravely Acting). Judging from the title and its common classification, the book falls under social and cultural writing. The pairing of "ever pondering" with "bravely acting" suggests an approach that connects reflection with practice, likely addressing themes such as personal cultivation, one's attitude toward life, or social practice. Yong Si Yong Xing serves as the main entry point for understanding Li Yongku's writing, and the style and argumentation of the author are chiefly reflected in this work. Because basic details such as nationality, dates of birth and death, English name, and specific experiences are unknown, this introduction makes no speculation about the author's life and offers only an objective account based on confirmed information about the work in the library, with further details awaiting additional public sources.