Đàng Trong
On 19 October 1631, he went to Thăng Long (Hanoi) with Bernardino Reggio. The next year, Maiorica and Reggio started a printing press to print copies of Matteo Ricci's Chinese-language work, "The True Meaning of the Lord of Heaven", as well as a defense of the faith by Francesco Buzomi. The press was destroyed within several months. Maiorica left Thăng Long for Kẻ Rum, in Nghệ country ("", present-day Nghệ An), to seek converts in the hinterlands. He stopped writing in the early 1640s to focus on his pastoral duties. In the early 1650s, he returned to Thăng Long to serve as the superior of the Tonkin missionary region. In 1653, he was promoted to provincial of the Jesuits' Japan Province (which included Tonkin, Đàng Trong, Makassar, Cambodia, and Hainan island). Although this province was officially based out of Macau, Maiorica administered it from Thăng Long. In January 1656, he fell ill in Thanh Hóa and died on 27 January 1656 in Thăng Long.