File:Rectificación y Mejora de Principios Naturales 天主教真傳實錄 (1593).png

English: Extract from page 2-3 of "The Manila Incunabula and Early Hokkien Studies, Part 1" by Piet Van der Loon (1966) who originally extracted the front page of "Rectificación y Mejora de Principios Naturales (天主教真傳實錄)" (1593). Van der Loon details that this is a blockprint page of Classical Chinese, mostly in dialogue form, used by Sangley Chinese in Spanish colonial Philippines at the time. The full Chinese title is "新刻僧師嗃呣𠿢撰無極天主正教真傳實錄章之一" (Mandarin: Hsin1k'o4 Seng1shih1 Kao1mu3 Hsien4-chuan4 Wu2chi2 T'ien1chu3 Cheng4chiao4 Chen1ch'uan2 Shih2lu4 Chang1 chih1 i, Hokkien: Sin Khek Seng-su Kobó Soān Choān Bô-ke̍k Thian-chú Chèng-kàu Chin-thoān Si̍t-lio̍k Chiang chi it, lit. "A printed edition of the Veritable record of the authentic tradition of the true faith in the Infinite God by the religious master Kao-mu Hsien.") Kao-mu Hsien in Hokkien is Ko-bo Suan, which in Early Modern Spanish "J" was pronounced more like /ʃ/ hence /s/ in Early Manila Hokkien, otherwise known as the Spanish Dominican Friar Juan Cobo. The original copy of Cobo's book is preserved in Biblioteca Nacional de España in Madrid, Spain.