Complex sentence: Returning to Mongolia in 1942, Yadamsüren became a well known portrait painter, his work focusing on revolutionary figures (such as Marshall Choibalsang and Sükhbaatar) depicted in a European style.
Split into simpler sentences: Returning to Mongolia in 1942, Yadamsüren became a well known portrait painter. His work focused on revolutionary figures such as Marshall Choibalsang and Sükhbaatar depicted in a European style.