Enemy Spy and General's Daughter

Lu Yunfei is a Japanese spy who has been lurking in the Xuan Kingdom for many years. He often performs as a piano player in restaurants, teahouses, brothels, and the homes of dignitaries, collecting intelligence secretly, and sometimes steals treasures as a flying thief. Until that day, he met her, Zhao Ruolan, the daughter of General Xuanguo. Zhao Ruolan was a strange woman who grew up following her father in a military camp. When she grew up, she followed her father on the battlefield. She was bohemian and unrestrained throughout her life until she met him. When his/her identity is exposed, what should he/she do?