An Infallible Excuse

He Xiyan just finished a bowl of noodles. With no appetite, she could only force herself to eat. Yesterday she lost control of her emotions and made a mess of the house. Now there was no place left to stand in the house.

She squatted on the ground and began to pick up the pieces of broken cups and bowls. Because of her absence of mind, her fingers, cut by glass fragments, bled a little. But as if having not found that, she continued to pick, and then returned those messy things to their original positions. Then she found a mop and began to mop the ground. She mopped the floor over and over again until she heard a knock outside the door. Then she stopped her repeated actions.

"Who is it?" As she walked towards the door, she asked the knocker outside. After all, there was no monitor or a peephole on the door.

"Knock knock..." The person outside the door knocked twice again.

Then came a little child's voice.

"Mom... Mom, open the door..."