"Zhang Yi, what's wrong?"
Zhou Hao hurried forward and asked Zhang Yi, whose eyes were bloodshot as he held a cake in one hand.
Zhang Yi endured his broken heart and gritted his teeth. "My, my sister, she, she's gone!"
"She's gone?" Zhou Hao was stunned.
The other students were also puzzled.
Xu Ling walked over and consoled, "Zhang Yi, don't worry. Maybe your sister is still in school or went somewhere else?"
Zhang Yi shook his head forcefully. "No, not at all. My sister doesn't have any friends. Other than school, she usually stays at home. I've looked everywhere."
"Then did you tell your sister that we will be having a birthday celebration at De Ran Residence today?" Xu Ling asked again.
"No, I wanted to give my sister a surprise, so I didn't tell her. However, I told her to wait for me at school this afternoon."