This paper examines the Tonkin Free School (Đông Kinh Nghĩa Thục) as a key site for the transmission and adaptation of East Asian reformist thought in early 20th-century Vietnam. Through an analysis of Văn Minh Tân Học Sách (New Learning Strategies for the Advancement of Civilization), it highlights how Vietnamese intellectuals engaged with and reconfigured ideas from Kang Youwei 康有爲 (1858-1927), Liang Qichao 梁啓超 (1873-1929), Fukuzawa Yukichi 福澤諭吉(1835-1901), and Zheng Guanying 鄭觀應 (1842–1922) within a localized vision of modernization. The study underscores that texts composed in Classical Chinese within the East Asian Sinosphere must be read in their original written language to fully reveal their intertextual references. Translating such texts into a non-Chinese language requires direct engagement with the original rather than reliance on intermediary versions, ensuring the preservation of intertextual richness. Without this process, translations risk distorting a text’s intellectual and cultural dimensions. By reassessing the textual strategies of the Tonkin Free School and subsequent translations of Văn Minh Tân Học Sách, this paper highlights Vietnam’s modernization as an active intellectual negotiation rather than a passive reception of foreign ideas.