This looks adorable. Since young, our female lead has been bed-ridden sick whenever she forms attachments/falls in love, so she guards her heart protectively. However, to protect her brother in Qing Yun Academy, she disguises her a male student to follow him. There she meets the overbearing and arrogant nobleman who despises marriages due to the many failed relationships, leaving him broken-hearted. Aww. Poor lad.