Conceived With the Lights On or Off

Amelia lay on her stomach and watched Alex scribble on the paper. "So, where did she go?"

Alex suddenly stood up. "Let's go and find your eldest uncle!"

In William's room, William stared at the surveillance cameras and checked them repeatedly. Then, he calculated a bunch of messy things on the paper. No one knew what he was calculating.

George pushed the door open and entered. He glanced at the table and said, "There's no need to calculate it." If Alex couldn't find it, William definitely couldn't either.

William put down the pen and remained silent. George sat down at the side and said, "Ask whatever you want."

William immediately turned around and asked, "Dad, how did you conceive me and my brother with my mother back then? Were the lights on or off? Why couldn't you see her face?"

George was silent.