Cai Yiren was furious, she blurted out, "Lu Weixi, no matter what, Uncle Bai raised you. Do you think you can wipe all his efforts away with a mere slap? There's no such easy way to dispose of things in this world!"
She sympathized with her mother, who had struggled all her life. She was dumped by her previous man and had to strive alone in the big city. It was a blessing when she met a good Samaritan. But this Samaritan was an outstanding and accomplished man. Her mother devoted her entire heart to him. With time, she saw his unhappy relationship with his wife, and naturally harbored the intention to replace her.
Cai Yiren was so angry that she didn't even call him "Dad" anymore, and directly addressed Bai Changyou as "Uncle Bai".