Complex sentence: Also known as Crown Prince Hyomyeong, he is the eldest son of King Sunjo and heir to the throne; smart, bright and mischievous, he has an affinity towards arts and music.
Split into simpler sentences: Also known as Crown Prince Hyomyeong, he is the eldest son of King Sunjo and heir to the throne. Smart, bright and mischievous, he has an affinity towards arts and music.