He commenced his ecclesial studies in Hang Xan at the Sacred Heart ecclesial institute in 1908 (1908–16) and completed a period in which he worked as a catechist in 1920. He continued studies abroad in 1920 at the Penang ecclesial institute and concluded in 1925 all the while having received the minor orders (August 1924) as well as both the subdiaconate (August 1925) and the diaconate (September 1925).
