Complex sentence: The history further records that as young men the two companions, Jang Bogo and Jeong Yeon, traveled to Tang China and their skills in horsemanship and the handling of spears soon won them military office.
Split into simpler sentences: The history further records that as young men the two companions, Jang Bogo and Jeong Yeon, traveled to Tang China. Their skills in horsemanship and the handling of spears soon won them military office.