Complex sentence: Hana Ryu studied at the Korea National University of Arts in Seoul, then came to the United States in 2012 on a student visa to pursue a Master of Music degree at Binghamton University.
Split into simpler sentences: Hana Ryu studied at the Korea National University of Arts in Seoul. He came to the United States in 2012 on a student visa to pursue a Master of Music degree at Binghamton University.