Early Saturday morning, Mu Nan was still fighting in his dreams when he was suddenly woken up by a loud noise of windows being dug.

She opened her eyelids and saw the big black dog's head lying on the window. The big bell-sized dog's eyes were looking at her attentively, and its paws were digging hard at the big glass window. The sky was bright, and the early autumn sun shone in, warmly sprinkling into the room.

Mu Nan rolled over, yawned, hugged the quilt, closed ...