Mom , I'm starving .   Here are some biscuits . Why are you back so early today ?   My teacher had a sudden stomachache , so the class was cut shot . You ?   Me what ?   You are cooking at least two hours earlier than the usual .   It's not for us .   Then it's for Dad , isn't it ? It's so unfair !   Don't be a smarty-pants . It's for Grandma Wang .   What was that again ?   It's for Grandma Wang . She is sick and her only daughter went abroad weeks ago . So she needs our help .   I'm sorry , I didn't know that . But I wanna help .   Umm , let me think for a moment . We can meet her together after I finish cooking .   I'll get knee to knee with her . 