How? Why?

When Song Xueyun reached Han Nanxian's grandfather's house, she was curious why the old man asked her to bring clothes for the woman. She pressed the bell and a few moments later, a man in his fifties opened the door. 

"Good evening, Young Madam. Please come inside, " The caretaker said with a smile. 

Song Xueyun paused. Young Madam? What was happening here? Then, her eyes widened. The old man found out that she and Han Nanxian got married to each other. How on earth did he find that out? She got nervous about meeting him. How would she face him? What would he say about their marriage?