Complex sentence: Cha Eun-sang asks the question "When do people's hearts become warm?" on her social network account: various characters and idols answer in different ways that music warms their hearts.
Split into simpler sentences: Cha Eun-sang asks the question "When do people's hearts become warm?" on her social network account. This question spreads online and various characters and idols answer in different ways that music warms their hearts.