大秦景教流行中国碑
In 1627, the first European visitors to Bhutan—the Portuguese Jesuits Estevao Cacella and João Cabral—found the Zhabdrung to be a compassionate and intelligent host, of high energy and fond of art and writing. In keeping with his position as a high "lama", he was also meditative, and had just completed a three-year, silent retreat. The Zhabdrung was proud to have the Jesuits as guests of his court, and was reluctant to grant them permission to leave—offering to support their proselytizing efforts with manpower and church-building funds—but they pressed on to Tibet in search of the apostate church said to be isolated in the heart of central Asia (see Nestorian Stele).