Love You for More Than Six Years

President Gu's return from studying abroad still falls in love with Bai Yueguang in his heart. Six years ago, Lu Ning left a message saying "break up" and there has been no news since. Six years later she came to his company for an interview and he abused her. A misunderstanding was solved during a conversation by chance. How should Gu Jinghang win back Lu Ning's heart?