Халхын Түмэнхэн хөндлөн цөөхүр ноёны асуудалд (= Об изучении биографии халхаского Тумэнхэн Сайн-нойон-хана)

The article reveals the Khalkha history of the XVI–XVII centuries, describes the events where one of the prominent state and religious leaders Tumenkhen Sain-noyon (1558–1640) took an active part. It is noted that this was a historic period related to the third wave of the spread of Buddhism among Mongols. This also was the time of significant changes in the political history, economics and religious life of the countries and nations of Central Asia. During this period Tumenkhen Sain-noyon with his elder brother Avatai made great efforts to spread the teaching of Geluk, organize the building of Buddhist temples and translate sacred books.