C50 I Owe You a Birthday
"What are you two talking about? Come and eat!"
Grandma had just entered Su Han's bedroom when she saw them lying in front of the desk, seriously calculating something.
"Okay, okay, okay! I'll be right there!"
Su Han quickly put the draft paper into the pile of books and signaled Lih Jinghuai to go and eat.
The moment Lih Jinghuai got close to the table
