Xu Siyan smirked coldly, "I would never take such a person as my sister, and moreover, her daddy and mummy do not..."
Xu Siyan's words were cut off abruptly by a slap from Xu Siai. The loud sound shocked Xu Siyan, who stood there, staring dully at Xu Siai.
"I'm warning you for the last time today, Xu Siai is your sister. She's your sister today, she'll be your sister tomorrow. Even if one day she's no longer named Xu Siyu, she will still be your second sister. If you utter such words again, you're aware of your eldest sister's prowess, right?" Xu Siai smirked ominously.
Xu Siai, though dressed in professional attire, appeared to be a well-behaved lady.