Could it be...
Gu Nanfeng only felt his heartbeat getting faster and faster, so fast that it seemed beyond control, and he had to press down hard with his hand to prevent it from leaping out of his chest...
"You'll find out in a moment!"
The woman's excited voice had just come through when he heard the anxious footsteps receding, "Brother, wait for me, I'll be right back. Then you'll see how smart your sister is!"
Gu Nanfeng: "..."
Wait some more?
