The things called their names

At once all the sleepiness that was layered over his eyes vanished. Ji Zhuang Guang looked at the clock on the wall, which showed the time three fifteen in the morning and gulped nervously. Who might be knocking on the door at this time? 

" Zhuang Guang? Are you inside honey? Please open the door, it's your mother." 

Ji Zhuang Guang pursed his lips, he was about to answer his mother and open the door but then he suddenly remembered what Song Yan told him. She said to him that the ghost would try to make them open the door by mimicking the voices of the people they knew, if he answered the call before the third call then he would be inviting the ghost inside the ward even without opening the door. 

He paused in his steps and then looked at the door warily, was this really his mother? He knew his mother's habits and he was aware of how his mother never simply barged anywhere, she would call them that she was arriving and ask them to wait.