Complex sentence: Ji-hyeon is a mute, during a car accident which impaled her throat, she now cannot speak again and can only make rasping noises at the most, despite this, she is a very strong person and very caring for her little sister.
Split into simpler sentences: Ji-hyeon is a mute, during a car accident which impaled her throat. She now cannot speak again and can only make rasping noises at the most; despite this, she is a very strong person and very caring for her little sister.