Han Mongol Encounters and Missionary Endeavors traces the history of the Belgian Scheut mission within the ecological, geopolitical, socioeconomic and ethnocultural context of the Mongol-Han borderlands during the height of European colonialism and the collapse of the Qing dynasty.The main subjects of this study are over 100 Roman Catholic Missionaries form the Low Countries (Holland and Belgium) who worked in the Southwest Mongolia apostolic vacariate