Catholic missionaries in Mongolia?

A while back I read the book ***Remembrances of a Journey in Tartary, Tibet and China***. The book chronicles two French Catholic Missionaries in these regions during the years 1844, 1845, and 1846. In order to avoid too much reprisals from locals Father [Evariste Huc](https://en.wikipedia.org/wiki/Évariste_Régis_Huc#Works) and Father Joseph Gabet darkened their skin and donned the robes traditionally worn by religious [Buddhists lamas](https://en.wikipedia.org/wiki/Lama) of these regions and called themselves ***lamas of the western skies*** (meaning Europe). > When his Chinese was considered sufficient, he disguised himself for work on the mainland by growing out his hair, cutting it into the obligatory queue, wearing loose Chinese garments, and dyeing his skin to a yellower shade. He took a ship up the Pearl River to Guangzhou ("Canton") and oversaw a mission in the southern provinces for a time. He then traveled north to Beijing ("Peking"), where he improved his Mandarin. > > In Mongolia > > He then settled in the Valley of Black Waters or Heishui, 300 miles (480 km) north of Beijing and just within the borders of Mongolia. There, beyond the Great Wall of China, a large but scattered population of native Christians had taken refuge from the persecutions of the Jiaqing Emperor ("Kia-king") who had added Christianity to China's list of condemned superstitions and cults, threatening missionaries with execution and converts with enslavement to the Muslims of Xinjiang. Huc devoted himself to the study of the dialects and customs of the "Tartars," for whom he translated several religious texts. - [Évariste Régis Huc](https://en.wikipedia.org/wiki/Évariste_Régis_Huc#Works) My question is as follows: **What are the unique ways Catholic Missionaries are employing in Mongolia nowadays to expand the Christian faith?** I am also leaving this question open to other Christian denominations in Mongolia, seeing that the Christian population of tthis country is extremely small.