qnli question: Malyarchuk said the Mongoloid component of Slavic people was partially added before the split of "Balto-Slavics" in what time period? sentence: Malyarchuk said that other Slavs "Mongoloid component" was increased during the waves of migration from "steppe populations (Huns, Avars, Bulgars and Mongols)", especially the decay of the "Avar Khaganate".