Cryptology

Cheng Zinuo finally snapped out of her daze and slowly opened the door.

The boy standing in front of her was eighteen or nineteen years old. He was tall, had messy hair, a bruise on his face, and tattered clothes.

Even so, Cheng Zinuo could still recognize that the boy's facial features had not been devoured by the passage of time.

Tears rolled down her face. Cheng Zinuo's hands trembled as she lifted them, then slowly landed them on the boy's shoulders. Her face was filled with disbelief. After a long while, she finally found her voice. "Ziyan!"

Cheng Ziyan, the younger brother of Cheng Zinuo.

At the age of eight, Cheng Ziyan did not return home in time after school one day. He and his classmates went to a park to play football.

But during the break, on his way to the bathroom, he was taken away.

Since then, he had never been heard from again.