“祝你生日快乐……祝你生日快乐……祝你生日快乐……祝你生日快乐......”

“happybirthdaytoyou......happybirthdaytoyou......happybirthdaytoyou......happybirthdaytoyou......”

“小雪！生日快乐！”

原来是张佳欣姐妹的声音。

她们俩人