Kalmyk deportations of 1943 originally nomadic shepherds of Dzungaria. They speak a West Mongolian language, an Altaic language. They practice Lamaism, a form of Buddhism practiced also in Tibet. In the 1630s, several Oirat tribes migrated westwards and settled along the Volga river. They were consolidated into a new ethnic group, the Kalmyks. While a part of their group went back to Dzungaria, others stayed and recognized the authority of the Russian Empire by the 18th century. During the Russian Civil War, a majority of Kalmyks actively participated in anti-communist Russian armies. When the Bolsheviks ultimately took power, numerous anti-communist people emigrated from Russia
History of Buddhism the Chinese monk Xuanzang traveled to India, bringing back 657 Buddhist texts along with relics and statues. He established a famed translation school in the Tang capital of Chang'an (today's Xi'an), focusing on Yogacara school texts. Also during the Tang, Chinese Esoteric Buddhism was introduced from India. The Tang dynasty also saw the growth of Chan Buddhism (Zen), with the great Zen masters such as Mazu Daoyi and Linji Yixuan. In the later Tang, Chinese Buddhism suffered a setback during the Great Anti-Buddhist Persecution of 845. Buddhism recovered during the Song Dynasty (960–1279), which is known as the "golden age"