Exclusive Favouritism

To revenge, Xia Yihan swallowed her pride and disguised herself as a maid to sneak in Family Ye’s mansion. She didn’t want to have anything to do with Ye Zi Mo, but life brought them together. They went toe-to-toe at first, but later on, they got engaged to each other? But things didn’t go as happy-ever-after as we thought. Why did Ye Zi Mo get outraged when he know that Xia Yihan was pregnant?