"Knock...Knock...Knock..."

She shivered in terror, dropped the book, and reached for the phone, which was still lit, and flashed across the room. It's so late at night, who would type "knock...knock...knock..." like that?

Certainly not grandparents, although it is said that old people sleep very well, but why would your grandparents play tricks like that? Totally absurd! Not even her sister because it was sleeping like that, she sat like a stone statue on the bed, feeling like she was the Prince in her grandmother's story. But that was when the Prince was lucky to meet the god, and she secretly prayed that she would not meet anyone, at least for this night.

The sound came again "knock...knock...knock" but this time she realized: the sound didn't seem to be coming from her room, no, so which room did it come from?

Curious blood rose, she got out of bed, still holding the phone, she walked cautiously step by step to the main oak door, one hand on the doorknob, she pressed her ear to it, hi. hope to hear that mysterious sound again, that sound still resounds evenly "knock...knock...knock" with one hand on the doorknob, she took a deep breath as she was preparing Turning the knob to open the door, a sound startled her.

Footsteps were heard coming from the bottom of the stairs. Moreover, this sound of footsteps is very urgent, it seems that grandpa is coming up, right? Or maybe a grandma? Surely it can only be one of the two, she knows that her sister's room is on the upper floor and her grandparents are elderly, so she chose the lower floor to facilitate commuting as well as taking care of the house.

She jumped back in panic, the phone in her hand almost fell to the ground, causing a noise that woke her sister. Fortunately, she still held it tight, the footsteps rushed from downstairs to the first floor but ran towards the end of the hallway, only then did she notice that the "knock...knock...knock" that have been silent ever since.

Then the sound of those footsteps hurriedly went to her sisters room, she quickly ran to the bed, turned off the phone light, put the blanket over her body, closed her eyes, pretending to be asleep. The door to her sister's room gently opened, she opened her eyes and saw a shadow of a person peeking in for a few minutes, then the door was also closed gently.

It was two o'clock in the morning, she clocked the time on her phone, she involuntarily sat up and looked at her sister and saw that she was still fast asleep, her face smiling happily, she must be lost in some fairy dream. this. Then she lay down, closed her eyes and tried to put herself to sleep, into some fairyland dream that even she herself could not know.

But again, all her efforts failed.